1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index dd2c262aebbf..8b80bac055e4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6390,7 +6390,7 @@ sub process {
                 exit(0);
         }
 
-        if (!$is_patch && $file !~ /cover-letter\.patch$/) {
+        if (!$is_patch && $filename !~ /cover-letter\.patch$/) {
                 ERROR("NOT_UNIFIED_DIFF",
                       "Does not appear to be a unified-diff format patch\n");
         }