diff --git a/qubesmanager/common_threads.py b/qubesmanager/common_threads.py
index 9f622a46..597711f5 100644
--- a/qubesmanager/common_threads.py
+++ b/qubesmanager/common_threads.py
@@ -75,9 +75,9 @@ def run(self):
 
 
 class ChangeTemplatesThread(QtCore.QThread):
-    def __init__(self, progress_dialog, items_to_change, qubes_app):
+    def __init__(self, main_dialog, items_to_change, qubes_app):
         super().__init__()
-        self.dialog = progress_dialog
+        self.main_dialog = main_dialog
         self.items = items_to_change
         self.qubes_app = qubes_app
         self.errors = {}
@@ -91,4 +91,4 @@ def run(self):
                         'template', row.new_item.currentText())
             except Exception as ex:  # pylint: disable=broad-except
                 self.errors[vm] = str(ex)
-            self.dialog.setValue(i)
+            self.main_dialog.progress_signal.emit(i)
diff --git a/qubesmanager/template_manager.py b/qubesmanager/template_manager.py
index bb8935bf..b5f89cf5 100644
--- a/qubesmanager/template_manager.py
+++ b/qubesmanager/template_manager.py
@@ -39,6 +39,8 @@
 class TemplateManagerWindow(
         ui_templatemanager.Ui_MainWindow, QtWidgets.QMainWindow):
 
+    progress_signal = QtCore.pyqtSignal(int)
+
     def __init__(self, qt_app, qubes_app, dispatcher, parent=None):
         # pylint: disable=unused-argument
         super().__init__(parent)
@@ -247,13 +249,16 @@ def apply(self):
         self.dialog.setCancelButton(None)
         self.dialog.setModal(True)
         self.dialog.show()
-
-        self.thread = common_threads.ChangeTemplatesThread(self.dialog,
+        self.progress_signal.connect(self.on_progress_changed)
+        self.thread = common_threads.ChangeTemplatesThread(self,
                                                            items_to_change,
                                                            self.qubes_app)
         self.thread.finished.connect(self.finish_changes)
         self.thread.start()
 
+    def on_progress_changed(self, value):
+        self.dialog.setValue(value)
+
     def finish_changes(self):
         self.dialog.hide()