diff --git a/IPython/Extensions/ipy_profile_sh.py b/IPython/Extensions/ipy_profile_sh.py
index 492680b..2257d30 100644
--- a/IPython/Extensions/ipy_profile_sh.py
+++ b/IPython/Extensions/ipy_profile_sh.py
@@ -98,7 +98,10 @@ def main():
     for cmd in syscmds:
         # print "sys",cmd #dbg
         noext, ext = os.path.splitext(cmd)
-        key = mapper(noext)
+        if ext.lower() == '.exe':
+            cmd = noext
+        
+        key = mapper(cmd)
         if key not in ip.IP.alias_table:
             ip.defalias(key.replace('.',''), cmd)