--- a/src/Tools/SubWCRev.py
+++ b/src/Tools/SubWCRev.py
@@ -511,11 +511,6 @@ def main():
 
     vcs = [
         GitControl(),
-        DebianGitHub(),
-        BazaarControl(),
-        Subversion(),
-        MercurialControl(),
-        DebianChangelog(),
         UnknownControl(),
     ]
     for i in vcs: