diff --git a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/SignalActionDelegate.java b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/SignalActionDelegate.java
index 5ba153f7590..9ebe62b460e 100644
--- a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/SignalActionDelegate.java
+++ b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/SignalActionDelegate.java
@@ -114,7 +114,7 @@ public class SignalActionDelegate implements IObjectActionDelegate
 
 	private boolean enablesFor( ICSignal signal )
 	{
-		return ( signal != null );
+		return ( signal != null && signal.getDebugTarget().isSuspended() );
 	}
 	
 	private void setSignal( ICSignal signal )