diff --git a/fs/pipe.c b/fs/pipe.c
index fec5e4a..95ebb56 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -693,7 +693,7 @@
 
 			return put_user(count, (int __user *)arg);
 		default:
-			return -EINVAL;
+			return -ENOIOCTLCMD;
 	}
 }