diff --git a/debug/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ContextualLaunchAction.java b/debug/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ContextualLaunchAction.java
index 5b5df03bc26..681fd428759 100644
--- a/debug/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ContextualLaunchAction.java
+++ b/debug/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/ContextualLaunchAction.java
@@ -15,11 +15,13 @@
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Set;
 
 import org.eclipse.core.expressions.Expression;
 import org.eclipse.core.expressions.IEvaluationContext;
@@ -280,9 +282,12 @@ protected void fillMenu(Menu menu) {
 			}
 		}
 		// now add collected launches
+		Set<ILaunchConfiguration> added = new HashSet<>();
 		for (Entry<LaunchShortcutExtension, ILaunchConfiguration[]> entry : launchConfigurations.entrySet()) {
 			for (ILaunchConfiguration configuration : entry.getValue()) {
-				populateMenuItem(fMode, entry.getKey(), menu, configuration, accelerator++, null);
+				if (added.add(configuration)) {
+					populateMenuItem(fMode, entry.getKey(), menu, configuration, accelerator++, null);
+				}
 			}
 		}