diff --git a/effects/_test/slidetabs/slidetabs_config.ui b/effects/_test/slidetabs/slidetabs_config.ui
index 6d194b6462..5213fd93dd 100644
--- a/effects/_test/slidetabs/slidetabs_config.ui
+++ b/effects/_test/slidetabs/slidetabs_config.ui
@@ -10,9 +10,6 @@
     <height>90</height>
    </rect>
   </property>
-  <property name="windowTitle">
-   <string/>
-  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QCheckBox" name="grouping">
diff --git a/effects/_test/swiveltabs/swiveltabs_config.ui b/effects/_test/swiveltabs/swiveltabs_config.ui
index 8c63bdfc96..227d7a97b7 100644
--- a/effects/_test/swiveltabs/swiveltabs_config.ui
+++ b/effects/_test/swiveltabs/swiveltabs_config.ui
@@ -10,9 +10,6 @@
     <height>102</height>
    </rect>
   </property>
-  <property name="windowTitle">
-   <string/>
-  </property>
   <layout class="QHBoxLayout" name="horizontalLayout_2">
    <item>
     <widget class="QGroupBox" name="groupBox">