diff --git a/Lib/CGIHTTPServer.py b/Lib/CGIHTTPServer.py
index 5017eec..a2d809c 100644
--- a/Lib/CGIHTTPServer.py
+++ b/Lib/CGIHTTPServer.py
@@ -353,7 +353,7 @@
         st = os.stat(path)
     except os.error:
         return False
-    return st.st_mode & 0111 != 0
+    return st.st_mode & 0o111 != 0
 
 
 def test(HandlerClass = CGIHTTPRequestHandler,