1 files changed, 1 insertions, 1 deletions
diff --git a/ref-filter.c b/ref-filter.c
index 914908fac5..6c2148c01e 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1380,7 +1380,7 @@ static void find_subpos(const char *buf,
 	/* check if message uses CRLF */
 	} else if (! (eol = strstr(*sub, "\r\n\r\n"))) {
 		/* treat whole message as subject */
-		eol = strrchr(*sub, '\0');
+		eol = sigstart;
 	}
 	buf = eol;
 	*sublen = buf - *sub;