diff --git a/net/sunrpc/debugfs.c b/net/sunrpc/debugfs.c
index 7cc1b8a..e7b4d93 100644
--- a/net/sunrpc/debugfs.c
+++ b/net/sunrpc/debugfs.c
@@ -304,7 +304,8 @@
 {
 	char buffer[16];
 
-	len = min(len, sizeof(buffer) - 1);
+	if (len >= sizeof(buffer))
+		len = sizeof(buffer) - 1;
 	if (copy_from_user(buffer, user_buf, len))
 		return -EFAULT;
 	buffer[len] = '\0';