diff --git a/gitlab4j-api/src/main/java/org/gitlab4j/api/NotesApi.java b/gitlab4j-api/src/main/java/org/gitlab4j/api/NotesApi.java
index 3f296323c..3e474717f 100644
--- a/gitlab4j-api/src/main/java/org/gitlab4j/api/NotesApi.java
+++ b/gitlab4j-api/src/main/java/org/gitlab4j/api/NotesApi.java
@@ -455,7 +455,7 @@ public Note getMergeRequestNote(Object projectIdOrPath, Long mergeRequestIid, Lo
      * @throws GitLabApiException if any exception occurs
      */
     public Note createMergeRequestNote(
-            Object projectIdOrPath, Long mergeRequestIid, String body, Date createdAt, boolean internal)
+            Object projectIdOrPath, Long mergeRequestIid, String body, Date createdAt, Boolean internal)
             throws GitLabApiException {
         GitLabApiForm formData =
                 new GitLabApiForm().withParam("body", body, true).withParam("internal", internal);
diff --git a/gitlab4j-api/src/main/java/org/gitlab4j/api/RepositoryApi.java b/gitlab4j-api/src/main/java/org/gitlab4j/api/RepositoryApi.java
index 6e455d27f..72e858a9f 100644
--- a/gitlab4j-api/src/main/java/org/gitlab4j/api/RepositoryApi.java
+++ b/gitlab4j-api/src/main/java/org/gitlab4j/api/RepositoryApi.java
@@ -904,6 +904,8 @@ public File getRepositoryArchive(
      * Compare branches, tags or commits. This can be accessed without authentication
      * if the repository is publicly accessible.
      *
+     * <pre><code>GitLab Endpoint: GET /projects/:id/repository/compare</code></pre>
+     *
      * @param projectIdOrPath the project in the form of an Long(ID), String(path), or Project instance
      * @param from the commit SHA or branch name
      * @param to the commit SHA or branch name
@@ -912,7 +914,7 @@ public File getRepositoryArchive(
      * @return a CompareResults containing the results of the comparison
      * @throws GitLabApiException if any exception occurs
      */
-    public CompareResults compare(Object projectIdOrPath, String from, String to, boolean straight)
+    public CompareResults compare(Object projectIdOrPath, String from, String to, Boolean straight)
             throws GitLabApiException {
         Form formData = new GitLabApiForm()
                 .withParam("from", from, true)
diff --git a/gitlab4j-api/src/main/java/org/gitlab4j/api/UserApi.java b/gitlab4j-api/src/main/java/org/gitlab4j/api/UserApi.java
index 834a05550..78bc33f76 100644
--- a/gitlab4j-api/src/main/java/org/gitlab4j/api/UserApi.java
+++ b/gitlab4j-api/src/main/java/org/gitlab4j/api/UserApi.java
@@ -545,7 +545,7 @@ public Stream<User> findUsersStream(String emailOrUsername) throws GitLabApiExce
      * @param projectsLimit the maximum number of project
      * @return created User instance
      * @throws GitLabApiException if any exception occurs
-     * @deprecated Will be removed in version 6.0, replaced by {@link #createUser(User, CharSequence, boolean)}
+     * @deprecated Will be removed in version 6.0, replaced by {@link #createUser(User, CharSequence, Boolean)}
      */
     @Deprecated
     public User createUser(User user, CharSequence password, Integer projectsLimit) throws GitLabApiException {
@@ -586,7 +586,7 @@ public User createUser(User user, CharSequence password, Integer projectsLimit)
      * @return created User instance
      * @throws GitLabApiException if any exception occurs
      */
-    public User createUser(User user, CharSequence password, boolean resetPassword) throws GitLabApiException {
+    public User createUser(User user, CharSequence password, Boolean resetPassword) throws GitLabApiException {
         Form formData = userToForm(user, null, password, resetPassword, true);
         Response response = post(Response.Status.CREATED, formData, "users");
         return (response.readEntity(User.class));
diff --git a/gitlab4j-api/src/main/java/org/gitlab4j/api/WikisApi.java b/gitlab4j-api/src/main/java/org/gitlab4j/api/WikisApi.java
index d9453509c..2ade18640 100644
--- a/gitlab4j-api/src/main/java/org/gitlab4j/api/WikisApi.java
+++ b/gitlab4j-api/src/main/java/org/gitlab4j/api/WikisApi.java
@@ -96,7 +96,7 @@ public Stream<WikiPage> getPagesStream(Object projectIdOrPath) throws GitLabApiE
      * @param perPage the number of wiki-pages per page
      * @return a list of pages in project's wiki for the specified range
      * @throws GitLabApiException if any exception occurs
-     * @deprecated Will be removed in a future release, use {@link #getPages(Object, boolean, int)}
+     * @deprecated Will be removed in a future release, use {@link #getPages(Object, Boolean, int)}
      */
     public List<WikiPage> getPages(Object projectIdOrPath, int page, int perPage) throws GitLabApiException {
         Response response = get(
@@ -118,7 +118,7 @@ public List<WikiPage> getPages(Object projectIdOrPath, int page, int perPage) th
      * @return a List of pages in project's wiki for the specified range
      * @throws GitLabApiException if any exception occurs
      */
-    public List<WikiPage> getPages(Object projectIdOrPath, boolean withContent) throws GitLabApiException {
+    public List<WikiPage> getPages(Object projectIdOrPath, Boolean withContent) throws GitLabApiException {
         return (getPages(projectIdOrPath, withContent, getDefaultPerPage()).all());
     }
 
@@ -133,9 +133,12 @@ public List<WikiPage> getPages(Object projectIdOrPath, boolean withContent) thro
      * @return a Pager of pages in project's wiki for the specified range
      * @throws GitLabApiException if any exception occurs
      */
-    public Pager<WikiPage> getPages(Object projectIdOrPath, boolean withContent, int itemsPerPage)
+    public Pager<WikiPage> getPages(Object projectIdOrPath, Boolean withContent, int itemsPerPage)
             throws GitLabApiException {
-        GitLabApiForm formData = new GitLabApiForm().withParam("with_content", (withContent ? 1 : 0));
+        GitLabApiForm formData = new GitLabApiForm();
+        if (withContent != null) {
+            formData.withParam("with_content", (withContent.booleanValue() ? 1 : 0));
+        }
         return (new Pager<WikiPage>(
                 this,
                 WikiPage.class,
@@ -156,7 +159,7 @@ public Pager<WikiPage> getPages(Object projectIdOrPath, boolean withContent, int
      * @return a Stream of pages in project's wiki for the specified range
      * @throws GitLabApiException if any exception occurs
      */
-    public Stream<WikiPage> getPagesStream(Object projectIdOrPath, boolean withContent) throws GitLabApiException {
+    public Stream<WikiPage> getPagesStream(Object projectIdOrPath, Boolean withContent) throws GitLabApiException {
         return (getPages(projectIdOrPath, withContent, getDefaultPerPage()).stream());
     }