diff --git a/terminatorlib/preferences.glade b/terminatorlib/preferences.glade
index c5d42523..8e286f80 100644
--- a/terminatorlib/preferences.glade
+++ b/terminatorlib/preferences.glade
@@ -903,7 +903,7 @@
                                     <property name="digits">0</property>
                                     <property name="draw_value">False</property>
                                     <property name="value_pos">bottom</property>
-                                    <signal name="change-value" handler="on_handlesize_change_value" swapped="no"/>
+                                    <signal name="value-changed" handler="on_handlesize_value_changed" swapped="no"/>
                                   </object>
                                   <packing>
                                     <property name="left_attach">2</property>
@@ -922,7 +922,7 @@
                                     <property name="digits">2</property>
                                     <property name="draw_value">False</property>
                                     <property name="value_pos">bottom</property>
-                                    <signal name="change-value" handler="on_inactive_color_offset_change_value" swapped="no"/>
+                                    <signal name="value-changed" handler="on_inactive_color_offset_value_changed" swapped="no"/>
                                   </object>
                                   <packing>
                                     <property name="left_attach">2</property>
@@ -2813,7 +2813,7 @@
                                     <property name="round_digits">2</property>
                                     <property name="digits">2</property>
                                     <property name="value_pos">bottom</property>
-                                    <signal name="change-value" handler="on_darken_background_scale_change_value" swapped="no"/>
+                                    <signal name="value-changed" handler="on_darken_background_scale_value_changed" swapped="no"/>
                                   </object>
                                   <packing>
                                     <property name="expand">True</property>
diff --git a/terminatorlib/prefseditor.py b/terminatorlib/prefseditor.py
index 85b5c60e..fe25eac5 100755
--- a/terminatorlib/prefseditor.py
+++ b/terminatorlib/prefseditor.py
@@ -871,7 +871,7 @@ class PrefsEditor:
         self.config['scrollbar_position'] = value
         self.config.save()
 
-    def on_darken_background_scale_change_value(self, widget, scroll, _value_not_rounded):
+    def on_darken_background_scale_value_changed(self, widget):
         """Background darkness setting changed"""
         value = widget.get_value()  # This one is rounded according to the UI.
         if value > 1.0:
@@ -1048,7 +1048,7 @@ class PrefsEditor:
         self.config['title_transmit_fg_color'] = color2hex(widget)
         self.config.save()
 
-    def on_inactive_color_offset_change_value(self, widget, scroll, _value_not_rounded):
+    def on_inactive_color_offset_value_changed(self, widget):
         """Inactive color offset setting changed"""
         value = widget.get_value()  # This one is rounded according to the UI.
         if value > 1.0:
@@ -1059,7 +1059,7 @@ class PrefsEditor:
         label_widget = guiget('inactive_color_offset_value_label')
         label_widget.set_text('%d%%' % (int(value * 100)))
 
-    def on_handlesize_change_value(self, widget, scroll, _value_not_rounded):
+    def on_handlesize_value_changed(self, widget):
         """Handle size changed"""
         value = widget.get_value()  # This one is rounded according to the UI.
         value = int(value)          # Cast to int.