diff --git a/bundles/org.eclipse.launchbar.ui/src/org/eclipse/launchbar/ui/internal/commands/ConfigureActiveLaunchHandler.java b/bundles/org.eclipse.launchbar.ui/src/org/eclipse/launchbar/ui/internal/commands/ConfigureActiveLaunchHandler.java
index 09d2d166a02..df7cd0cebc1 100644
--- a/bundles/org.eclipse.launchbar.ui/src/org/eclipse/launchbar/ui/internal/commands/ConfigureActiveLaunchHandler.java
+++ b/bundles/org.eclipse.launchbar.ui/src/org/eclipse/launchbar/ui/internal/commands/ConfigureActiveLaunchHandler.java
@@ -136,7 +136,7 @@ public class ConfigureActiveLaunchHandler extends AbstractHandler {
 			ILaunchGroup group = DebugUIPlugin.getDefault().getLaunchConfigurationManager().getLaunchGroup(configType,
 					mode.getIdentifier());
 			ILaunchConfiguration config = manager.getLaunchConfiguration(desc, target);
-			if (config.isWorkingCopy() && ((ILaunchConfigurationWorkingCopy) config).isDirty()) {
+			if (config instanceof ILaunchConfigurationWorkingCopy && ((ILaunchConfigurationWorkingCopy) config).isDirty()) {
 				config = ((ILaunchConfigurationWorkingCopy) config).doSave();
 			}
 			// open real eclipse launch configurations dialog