diff --git a/gitosis/serve.py b/gitosis/serve.py
index 40a2141..b1ed548 100644
--- a/gitosis/serve.py
+++ b/gitosis/serve.py
@@ -118,5 +118,5 @@ def main():
         command=command,
         newpath=newpath,
         )
-    os.execve('/usr/bin/git-shell', ['git-shell', '-c', newcmd], {})
+    os.execvpe('git-shell', ['git-shell', '-c', newcmd], {})
     die("Cannot execute git-shell.")