diff --git a/fityk/fityk.cpp b/fityk/fityk.cpp
index 7b28768f..b4b5f807 100644
--- a/fityk/fityk.cpp
+++ b/fityk/fityk.cpp
@@ -129,8 +129,7 @@ Fityk::~Fityk()
     delete p_;
 }
 
-void Fityk::execute(string const& s)  throw(SyntaxError, ExecuteError,
-                                            ExitRequestedException)
+void Fityk::execute(string const& s)
 {
     try {
         priv_->parse_and_execute_line(s);
@@ -139,8 +138,7 @@ void Fityk::execute(string const& s)  throw(SyntaxError, ExecuteError,
     CATCH_EXECUTE_ERROR
 }
 
-string Fityk::get_info(string const& s, int dataset)  throw(SyntaxError,
-                                                            ExecuteError)
+string Fityk::get_info(string const& s, int dataset)
 {
     try {
         string result;
@@ -152,8 +150,7 @@ string Fityk::get_info(string const& s, int dataset)  throw(SyntaxError,
     return "";
 }
 
-realt Fityk::calculate_expr(string const& s, int dataset)  throw(SyntaxError,
-                                                                  ExecuteError)
+realt Fityk::calculate_expr(string const& s, int dataset)
 {
     try {
         Lexer lex(s.c_str());
@@ -209,7 +206,7 @@ const Func* Fityk::get_function(const std::string& name) const
     return priv_->mgr.functions()[n];
 }
 
-vector<Func*> Fityk::get_components(int dataset, char fz)  throw(ExecuteError)
+vector<Func*> Fityk::get_components(int dataset, char fz)
 {
     const Model *model = priv_->dk.get_model(hd(priv_, dataset));
     const vector<int>& indexes = model->get_fz(fz).idx;
@@ -220,7 +217,7 @@ vector<Func*> Fityk::get_components(int dataset, char fz)  throw(ExecuteError)
     return ret;
 }
 
-realt Fityk::get_model_value(realt x, int dataset) const  throw(ExecuteError)
+realt Fityk::get_model_value(realt x, int dataset) const
 {
     try {
         return priv_->dk.get_model(hd(priv_, dataset))->value(x);
@@ -230,7 +227,6 @@ realt Fityk::get_model_value(realt x, int dataset) const  throw(ExecuteError)
 }
 
 vector<realt> Fityk::get_model_vector(vector<realt> const& x, int dataset)
-                                                          throw(ExecuteError)
 {
     vector<realt> xx(x);
     vector<realt> yy(x.size(), 0.);
@@ -241,7 +237,7 @@ vector<realt> Fityk::get_model_vector(vector<realt> const& x, int dataset)
     return yy;
 }
 
-const Var* Fityk::get_variable(string const& name) const  throw(ExecuteError)
+const Var* Fityk::get_variable(string const& name) const
 {
     try {
         string vname;
@@ -274,7 +270,6 @@ double Fityk::get_view_boundary(char side)
 }
 
 void Fityk::load(LoadSpec const& spec, int dataset)
-                     throw(ExecuteError)
 {
     if (dataset == DEFAULT_DATASET)
         dataset = priv_->dk.default_idx();
@@ -290,7 +285,7 @@ void Fityk::load_data(int dataset,
                       vector<realt> const& x,
                       vector<realt> const& y,
                       vector<realt> const& sigma,
-                      string const& title)     throw(ExecuteError)
+                      string const& title)
 {
     try {
         priv_->dk.data(dataset)->load_arrays(x, y, sigma, title);
@@ -299,7 +294,6 @@ void Fityk::load_data(int dataset,
 }
 
 void Fityk::add_point(realt x, realt y, realt sigma, int dataset)
-                                                          throw(ExecuteError)
 {
     try {
         priv_->dk.data(hd(priv_, dataset))->add_one_point(x, y, sigma);
@@ -307,7 +301,7 @@ void Fityk::add_point(realt x, realt y, realt sigma, int dataset)
     CATCH_EXECUTE_ERROR
 }
 
-vector<Point> const& Fityk::get_data(int dataset)  throw(ExecuteError)
+vector<Point> const& Fityk::get_data(int dataset)
 {
     static const vector<Point> empty;
     try {
@@ -335,23 +329,21 @@ void Fityk::redir_messages(FILE *stream)
 }
 
 void Fityk::set_option_as_string(const string& opt, const string& val)
-                                                            throw(ExecuteError)
 {
     priv_->mutable_settings_mgr()->set_as_string(opt, val);
 }
 
 void Fityk::set_option_as_number(const string& opt, double val)
-                                                            throw(ExecuteError)
 {
     priv_->mutable_settings_mgr()->set_as_number(opt, val);
 }
 
-string Fityk::get_option_as_string(const string& opt) const  throw(ExecuteError)
+string Fityk::get_option_as_string(const string& opt) const
 {
     return priv_->settings_mgr()->get_as_string(opt, /*quote_str=*/false);
 }
 
-double Fityk::get_option_as_number(const string& opt) const  throw(ExecuteError)
+double Fityk::get_option_as_number(const string& opt) const
 {
     return priv_->settings_mgr()->get_as_number(opt);
 }
@@ -366,7 +358,7 @@ string Fityk::input(string const& prompt)
     return priv_->ui()->get_input_from_user(prompt);
 }
 
-realt Fityk::get_wssr(int dataset)  throw(ExecuteError)
+realt Fityk::get_wssr(int dataset)
 {
     try {
         return get_wssr_or_ssr(priv_, dataset, true);
@@ -375,7 +367,7 @@ realt Fityk::get_wssr(int dataset)  throw(ExecuteError)
     return 0.;
 }
 
-realt Fityk::get_ssr(int dataset)  throw(ExecuteError)
+realt Fityk::get_ssr(int dataset)
 {
     try {
         return get_wssr_or_ssr(priv_, dataset, false);
@@ -384,7 +376,7 @@ realt Fityk::get_ssr(int dataset)  throw(ExecuteError)
     return 0.;
 }
 
-realt Fityk::get_rsquared(int dataset)  throw(ExecuteError)
+realt Fityk::get_rsquared(int dataset)
 {
     try {
         if (dataset == ALL_DATASETS) {
@@ -402,7 +394,7 @@ realt Fityk::get_rsquared(int dataset)  throw(ExecuteError)
     return 0.;
 }
 
-int Fityk::get_dof(int dataset)  throw(ExecuteError)
+int Fityk::get_dof(int dataset)
 {
     try {
         return priv_->get_fit()->get_dof(get_datasets_(priv_, dataset));
@@ -412,7 +404,6 @@ int Fityk::get_dof(int dataset)  throw(ExecuteError)
 }
 
 vector<vector<realt> > Fityk::get_covariance_matrix(int dataset)
-                                                           throw(ExecuteError)
 {
     try {
         vector<Data*> dss = get_datasets_(priv_, dataset);
diff --git a/fityk/fityk.h b/fityk/fityk.h
index deb7d5a6..0ab7ce74 100644
--- a/fityk/fityk.h
+++ b/fityk/fityk.h
@@ -120,10 +120,8 @@ class FITYK_API Func
 
     virtual const std::string& get_template_name() const = 0;
     virtual std::string get_param(int n) const = 0;
-    virtual const std::string& var_name(const std::string& param) const
-                                                    throw(ExecuteError) = 0;
-    virtual realt get_param_value(const std::string& param) const
-                                                    throw(ExecuteError) = 0;
+    virtual const std::string& var_name(const std::string& param) const = 0;
+    virtual realt get_param_value(const std::string& param) const = 0;
     virtual realt value_at(realt x) const = 0;
 protected:
     Func(const std::string name_) : name(name_) {}
@@ -179,26 +177,23 @@ class FITYK_API Fityk
     // @{
 
     /// execute command; throws exception on error
-    void execute(std::string const& s) throw(SyntaxError, ExecuteError,
-                                             ExitRequestedException);
+    void execute(std::string const& s);
 
 
     /// load data from file (path should be ascii or utf8, col=0 is index)
-    void load(LoadSpec const& spec, int dataset=DEFAULT_DATASET)
-                  throw(ExecuteError);
+    void load(LoadSpec const& spec, int dataset=DEFAULT_DATASET);
     void load(std::string const& path, int dataset=DEFAULT_DATASET)
-      throw(ExecuteError) { load(LoadSpec(path), dataset); }
+      { load(LoadSpec(path), dataset); }
 
     /// load data from arrays
     void load_data(int dataset,
                    std::vector<realt> const& x,
                    std::vector<realt> const& y,
                    std::vector<realt> const& sigma,
-                   std::string const& title="")  throw(ExecuteError);
+                   std::string const& title="");
 
     /// add one data point to dataset
-    void add_point(realt x, realt y, realt sigma, int dataset=DEFAULT_DATASET)
-                                                     throw(ExecuteError);
+    void add_point(realt x, realt y, realt sigma, int dataset=DEFAULT_DATASET);
 
     // @}
 
@@ -222,14 +217,10 @@ class FITYK_API Fityk
 
     /// @name settings
     // @{
-    void set_option_as_string(const std::string& opt, const std::string& val)
-                                                         throw(ExecuteError);
-    void set_option_as_number(const std::string& opt, double val)
-                                                         throw(ExecuteError);
-    std::string get_option_as_string(const std::string& opt) const
-                                                         throw(ExecuteError);
-    double get_option_as_number(const std::string& opt) const
-                                                         throw(ExecuteError);
+    void set_option_as_string(const std::string& opt, const std::string& val);
+    void set_option_as_number(const std::string& opt, double val);
+    std::string get_option_as_string(const std::string& opt) const;
+    double get_option_as_number(const std::string& opt) const;
     // @}
 
     /// @name input/output
@@ -255,12 +246,10 @@ class FITYK_API Fityk
     // @{
 
     /// return output of the info command
-    std::string get_info(std::string const& s, int dataset=DEFAULT_DATASET)
-                                            throw(SyntaxError, ExecuteError);
+    std::string get_info(std::string const& s, int dataset=DEFAULT_DATASET);
 
     /// return expression value, similarly to the print command
-    realt calculate_expr(std::string const& s, int dataset=DEFAULT_DATASET)
-                                            throw(SyntaxError, ExecuteError);
+    realt calculate_expr(std::string const& s, int dataset=DEFAULT_DATASET);
 
     //(planned)
     /// returns dataset titles
@@ -275,8 +264,7 @@ class FITYK_API Fityk
     int get_default_dataset() const;
 
     /// get data points
-    std::vector<Point> const& get_data(int dataset=DEFAULT_DATASET)
-                                                         throw(ExecuteError);
+    std::vector<Point> const& get_data(int dataset=DEFAULT_DATASET);
 
     /// returns number of simple-variables (parameters that can be fitted)
     int get_parameter_count() const;
@@ -288,7 +276,7 @@ class FITYK_API Fityk
     std::vector<Var*> all_variables() const;
 
     /// returns variable $name
-    const Var* get_variable(std::string const& name) const throw(ExecuteError);
+    const Var* get_variable(std::string const& name) const;
 
     /// returns all %functions
     std::vector<Func*> all_functions() const;
@@ -297,17 +285,14 @@ class FITYK_API Fityk
     const Func* get_function(const std::string& name) const;
 
     /// returns %functions used in dataset
-    std::vector<Func*> get_components(int dataset=DEFAULT_DATASET, char fz='F')
-                                                         throw(ExecuteError);
+    std::vector<Func*> get_components(int dataset=DEFAULT_DATASET, char fz='F');
 
     /// returns the value of the model for a given dataset at x
-    realt get_model_value(realt x, int dataset=DEFAULT_DATASET) const
-                                                         throw(ExecuteError);
+    realt get_model_value(realt x, int dataset=DEFAULT_DATASET) const;
 
     /// multiple point version of the get_model_value()
     std::vector<realt>
-    get_model_vector(std::vector<realt> const& x, int dataset=DEFAULT_DATASET)
-                                                         throw(ExecuteError);
+    get_model_vector(std::vector<realt> const& x, int dataset=DEFAULT_DATASET);
 
     /// get coordinates of rectangle set by the plot command
     /// side is one of L(eft), R(ight), T(op), B(ottom)
@@ -319,20 +304,20 @@ class FITYK_API Fityk
     // @{
 
     /// get WSSR for given dataset or for all datasets
-    realt get_wssr(int dataset=ALL_DATASETS)  throw(ExecuteError);
+    realt get_wssr(int dataset=ALL_DATASETS);
 
     /// get SSR for given dataset or for all datasets
-    realt get_ssr(int dataset=ALL_DATASETS)  throw(ExecuteError);
+    realt get_ssr(int dataset=ALL_DATASETS);
 
     /// get R-squared for given dataset or for all datasets
-    realt get_rsquared(int dataset=ALL_DATASETS)  throw(ExecuteError);
+    realt get_rsquared(int dataset=ALL_DATASETS);
 
     /// get number of degrees-of-freedom for given dataset or for all datasets
-    int get_dof(int dataset=ALL_DATASETS)  throw(ExecuteError);
+    int get_dof(int dataset=ALL_DATASETS);
 
     /// get covariance matrix (for given dataset or for all datasets)
     std::vector<std::vector<realt> >
-    get_covariance_matrix(int dataset=ALL_DATASETS)  throw(ExecuteError);
+    get_covariance_matrix(int dataset=ALL_DATASETS);
     // @}
 
     /// UiApi contains functions used by CLI and may be used to implement
diff --git a/fityk/func.cpp b/fityk/func.cpp
index 1813374e..86c8338d 100644
--- a/fityk/func.cpp
+++ b/fityk/func.cpp
@@ -197,7 +197,7 @@ int Function::get_param_nr(const string& param) const
     return n;
 }
 
-realt Function::get_param_value(const string& param) const  throw(ExecuteError)
+realt Function::get_param_value(const string& param) const
 {
     realt a;
     if (!param.empty() && islower(param[0]))
diff --git a/fityk/func.h b/fityk/func.h
index 8cbf5f9b..3bb79a9a 100644
--- a/fityk/func.h
+++ b/fityk/func.h
@@ -89,8 +89,7 @@ class FITYK_API Function : public Func
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wdeprecated"
 #endif
-    virtual realt get_param_value(const std::string& param) const
-                            throw(ExecuteError); // exc. spec. is used by SWIG
+    virtual realt get_param_value(const std::string& param) const;
 
     realt numarea(realt x1, realt x2, int nsteps) const;
 
@@ -104,7 +103,6 @@ class FITYK_API Function : public Func
     // implementation of members of Func
     virtual const std::string& get_template_name() const { return tp_->name; }
     virtual const std::string& var_name(const std::string& param) const
-                        throw(ExecuteError) // exc. spec. is used by SWIG
                         { return used_vars_.get_name(get_param_nr(param)); }
 #if defined(__clang__)
 #pragma clang diagnostic pop