diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CorefileDebuggerTab.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CorefileDebuggerTab.java
index f17bb4e7703..a29b7280bf8 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CorefileDebuggerTab.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CorefileDebuggerTab.java
@@ -164,6 +164,7 @@ public class CorefileDebuggerTab extends AbstractCDebuggerTab {
 				return true;
 			}
 		}
+		setDebugConfig(null);
 		return false;
 	}