1 files changed, 3 insertions, 4 deletions
diff --git a/mailmap.c b/mailmap.c
index 56c72102d9..58a4484963 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -243,10 +243,9 @@ void clear_mailmap(struct string_list *map)
 static struct string_list_item *lookup_prefix(struct string_list *map,
 					      const char *string, size_t len)
 {
-	int i = string_list_find_insert_index(map, string, 1);
-	if (i < 0) {
-		/* exact match */
-		i = -1 - i;
+	bool exact_match;
+	int i = string_list_find_insert_index(map, string, &exact_match);
+	if (exact_match) {
 		if (!string[len])
 			return &map->items[i];
 		/*