diff --git a/stoc/source/implementationregistration/mergekeys.cxx b/stoc/source/implementationregistration/mergekeys.cxx
index adcda393d018..4b7bc0796ec3 100644
--- a/stoc/source/implementationregistration/mergekeys.cxx
+++ b/stoc/source/implementationregistration/mergekeys.cxx
@@ -4,9 +4,9 @@
  *
  *  $RCSfile: mergekeys.cxx,v $
  *
- *  $Revision: 1.4 $
+ *  $Revision: 1.5 $
  *
- *  last change: $Author: rt $ $Date: 2005-09-08 07:55:25 $
+ *  last change: $Author: hr $ $Date: 2006-06-20 00:02:03 $
  *
  *  The Contents of this file are made available subject to
  *  the terms of GNU Lesser General Public License Version 2.1.
@@ -104,6 +104,9 @@ static void mergeKeys(
     case registry::RegistryValueType_STRINGLIST:
         xDest->setStringListValue( xSource->getStringListValue() );
         break;
+    default:
+        OSL_ASSERT(false);
+        break;
     }
 
     // sub keys