diff --git a/terminatorlib/preferences.glade b/terminatorlib/preferences.glade
index 9d04d2d2..8159eabb 100644
--- a/terminatorlib/preferences.glade
+++ b/terminatorlib/preferences.glade
@@ -861,10 +861,12 @@
                                 </child>
                                 <child>
                                   <object class="GtkHScale" id="inactive_color_offset">
+                                    <property name="width_request">100</property>
                                     <property name="visible">True</property>
                                     <property name="can_focus">True</property>
                                     <property name="adjustment">adjustment7</property>
-                                    <property name="round_digits">1</property>
+                                    <property name="round_digits">2</property>
+                                    <property name="digits">2</property>
                                     <property name="value_pos">left</property>
                                     <signal name="change-value" handler="on_inactive_color_offset_change_value" swapped="no"/>
                                   </object>
@@ -2839,7 +2841,8 @@
                                     <property name="visible">True</property>
                                     <property name="can_focus">True</property>
                                     <property name="adjustment">background_darkness_scale</property>
-                                    <property name="round_digits">1</property>
+                                    <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"/>
                                   </object>
diff --git a/terminatorlib/prefseditor.py b/terminatorlib/prefseditor.py
index 0924e005..02de5775 100755
--- a/terminatorlib/prefseditor.py
+++ b/terminatorlib/prefseditor.py
@@ -826,9 +826,12 @@ class PrefsEditor:
         self.config['scrollbar_position'] = value
         self.config.save()
 
-    def on_darken_background_scale_change_value(self, widget, scroll, value):
+    def on_darken_background_scale_change_value(self, widget, scroll, _value_not_rounded):
         """Background darkness setting changed"""
-        self.config['background_darkness'] = round(value, 2)
+        value = widget.get_value()  # This one is rounded according to the UI.
+        if value > 1.0:
+          value = 1.0
+        self.config['background_darkness'] = value
         self.config.save()
 
     def on_palette_combobox_changed(self, widget):
@@ -980,16 +983,18 @@ class PrefsEditor:
         self.config['title_transmit_fg_color'] = color2hex(widget)
         self.config.save()
 
-    def on_inactive_color_offset_change_value(self, widget, scroll, value):
+    def on_inactive_color_offset_change_value(self, widget, scroll, _value_not_rounded):
         """Inactive color offset setting changed"""
+        value = widget.get_value()  # This one is rounded according to the UI.
         if value > 1.0:
           value = 1.0
-        self.config['inactive_color_offset'] = round(value, 2)
+        self.config['inactive_color_offset'] = value
         self.config.save()
 
-    def on_handlesize_change_value(self, widget, scroll, value):
+    def on_handlesize_change_value(self, widget, scroll, _value_not_rounded):
         """Handle size changed"""
-        value = int(value)
+        value = widget.get_value()  # This one is rounded according to the UI.
+        value = int(value)          # Cast to int.
         if value > 5:
             value = 5
         self.config['handle_size'] = value