diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 56e811f9e5fa..1fad74c5d348 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -877,7 +877,7 @@ static int prepare_open(struct dentry *dentry, int oflag, int ro,
 		if (!(oflag & O_CREAT))
 			return -ENOENT;
 		if (ro)
-			return ro;
+			return -EROFS;
 		audit_inode_parent_hidden(name, dentry->d_parent);
 		return vfs_mkobj(dentry, mode & ~current_umask(),
 				  mqueue_create_attr, attr);