detect old version 2 hash files and return "bsddb185" as the appropriate
module to load them
diff --git a/Lib/whichdb.py b/Lib/whichdb.py
index cc95ed5..fed58e9 100644
--- a/Lib/whichdb.py
+++ b/Lib/whichdb.py
@@ -86,11 +86,12 @@
     if magic == 0x13579ace:
         return "gdbm"
 
-    # Check for BSD hash
+    # Check for old Berkeley db hash file format v2
     if magic in (0x00061561, 0x61150600):
-        return "dbhash"
+        return "bsddb185"
 
-    # BSD hash v2 has a 12-byte NULL pad in front of the file type
+    # Later versions of Berkeley db hash file have a 12-byte pad in
+    # front of the file type
     try:
         (magic,) = struct.unpack("=l", s16[-4:])
     except struct.error: