diff --git a/de.prob.ui/plugin.xml b/de.prob.ui/plugin.xml
index 7ddccf874a5df5730f1b613cd03f5e4f95c0c005..847cb80e140890db88aa9da3cf28b58a41c30b16 100644
--- a/de.prob.ui/plugin.xml
+++ b/de.prob.ui/plugin.xml
@@ -280,7 +280,7 @@
       <command
             id="de.prob.ui.stateview.toggleShowDuplicates"
             name="Toggle Show Duplicates">
-         <state class="org.eclipse.jface.commands.ToggleState"
+         <state class="org.eclipse.ui.handlers.RegistryToggleState:true"
             id="de.prob.ui.stateview.duplicateFilterState" />
       </command>
       <command