diff --git a/effects/coverswitch_config.ui b/effects/coverswitch_config.ui
index 9a7d3d6201..1122afe108 100644
--- a/effects/coverswitch_config.ui
+++ b/effects/coverswitch_config.ui
@@ -146,7 +146,7 @@
          </sizepolicy>
         </property>
         <property name="specialValueText" >
-         <string>Default</string>
+         <string comment="Duration of rotation">Default</string>
         </property>
         <property name="suffix" >
          <string> msec</string>
diff --git a/effects/cube_config.ui b/effects/cube_config.ui
index 4723210dbd..36bacd0d28 100644
--- a/effects/cube_config.ui
+++ b/effects/cube_config.ui
@@ -142,7 +142,7 @@
              </size>
             </property>
             <property name="specialValueText" >
-             <string>Default</string>
+             <string comment="Duration of rotation">Default</string>
             </property>
             <property name="suffix" >
              <string> msec</string>
diff --git a/effects/cylinder_config.ui b/effects/cylinder_config.ui
index 4c3c4ef977..dfbff8f373 100644
--- a/effects/cylinder_config.ui
+++ b/effects/cylinder_config.ui
@@ -142,7 +142,7 @@
              </size>
             </property>
             <property name="specialValueText" >
-             <string>Default</string>
+             <string comment="Duration of rotation">Default</string>
             </property>
             <property name="suffix" >
              <string> msec</string>
diff --git a/effects/desktopgrid_config.ui b/effects/desktopgrid_config.ui
index f0715afd59..10726221e2 100644
--- a/effects/desktopgrid_config.ui
+++ b/effects/desktopgrid_config.ui
@@ -38,7 +38,7 @@
          </sizepolicy>
         </property>
         <property name="specialValueText" >
-         <string>Default</string>
+         <string comment="Duration of zoom">Default</string>
         </property>
         <property name="suffix" >
          <string> msec</string>
diff --git a/effects/flipswitch_config.ui b/effects/flipswitch_config.ui
index 934b3780b6..833061e431 100644
--- a/effects/flipswitch_config.ui
+++ b/effects/flipswitch_config.ui
@@ -45,7 +45,7 @@
          </sizepolicy>
         </property>
         <property name="specialValueText" >
-         <string>Default</string>
+         <string comment="Duration of flip animation">Default</string>
         </property>
         <property name="suffix" >
          <string> msec</string>
diff --git a/effects/maketransparent_config.ui b/effects/maketransparent_config.ui
index fdf1c620e5..afb47a4b4f 100644
--- a/effects/maketransparent_config.ui
+++ b/effects/maketransparent_config.ui
@@ -275,7 +275,7 @@
          </size>
         </property>
         <property name="specialValueText" >
-         <string>Default</string>
+         <string comment="Duration of fading">Default</string>
         </property>
         <property name="suffix" >
          <string>msec</string>
diff --git a/effects/presentwindows_config.ui b/effects/presentwindows_config.ui
index 8db10b2eee..3d294f78f5 100644
--- a/effects/presentwindows_config.ui
+++ b/effects/presentwindows_config.ui
@@ -38,7 +38,7 @@
          </sizepolicy>
         </property>
         <property name="specialValueText" >
-         <string>Default</string>
+         <string comment="Duration of rearrangement">Default</string>
         </property>
         <property name="suffix" >
          <string> msec</string>
diff --git a/effects/sphere_config.ui b/effects/sphere_config.ui
index 6c4e888d54..56d60d654a 100644
--- a/effects/sphere_config.ui
+++ b/effects/sphere_config.ui
@@ -142,7 +142,7 @@
              </size>
             </property>
             <property name="specialValueText" >
-             <string>Default</string>
+             <string comment="Duration of rotation">Default</string>
             </property>
             <property name="suffix" >
              <string> msec</string>