diff --git a/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsi.cxx b/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsi.cxx
index 21a497bce25a..71158901f9f7 100644
--- a/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsi.cxx
+++ b/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsi.cxx
@@ -8,7 +8,7 @@
  *
  * $RCSfile: reg4allmsi.cxx,v $
  *
- * $Revision: 1.2 $
+ * $Revision: 1.3 $
  *
  * This file is part of OpenOffice.org.
  *
@@ -128,6 +128,10 @@ static BOOL CheckExtensionInRegistry( LPCSTR lpSubKey )
             {   // We will replace registration for our own types, too
                 bRet = true;
             }
+            if ( strncmp( szBuffer, "ooostub.", 8 ) == 0 )
+            {   // We will replace registration for ooostub, too
+                bRet = true;
+            }
         }
         else    // no default value found -> return TRUE to register for that key
             bRet = true;