diff --git a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/AddWatchpointDialog.java b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/AddWatchpointDialog.java
index f1d5ca96b97..3c42f7ba625 100644
--- a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/AddWatchpointDialog.java
+++ b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/AddWatchpointDialog.java
@@ -386,7 +386,7 @@ public class AddWatchpointDialog extends Dialog implements ModifyListener, Selec
 	}
 
 	public BigInteger getRange() {
-		return new BigInteger( fRange );
+		return BigInteger.valueOf( Long.decode(fRange).longValue() );
 	}
 	
 	public void initializeRange( boolean enable, String range ) {