diff --git a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/CDebugImageDescriptorRegistry.java b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/CDebugImageDescriptorRegistry.java
index 5398e836405..7981f86c487 100644
--- a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/CDebugImageDescriptorRegistry.java
+++ b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/CDebugImageDescriptorRegistry.java
@@ -85,12 +85,14 @@ public class CDebugImageDescriptorRegistry
 
 	private void hookDisplay()
 	{
-		fDisplay.disposeExec( new Runnable()
-									{
-										public void run()
-										{
-											dispose();
-										}
-									} );
+		fDisplay.asyncExec(new Runnable() {
+			public void run() {
+				fDisplay.disposeExec( new Runnable() {
+					public void run()	{
+						dispose();
+					}
+				} );
+			}
+		} );
 	}
 }