1 files changed, 1 insertions, 1 deletions
diff --git a/pretty.c b/pretty.c
index a1a01492c1..692a6382a1 100644
--- a/pretty.c
+++ b/pretty.c
@@ -1514,7 +1514,7 @@ static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
 			if (*ch != 'm')
 				break;
 			p = ch - 1;
-			while (ch - p < 10 && *p != '\033')
+			while (p > sb->buf && ch - p < 10 && *p != '\033')
 				p--;
 			if (*p != '\033' ||
 			    ch + 1 - p != display_mode_esc_sequence_len(p))