1 files changed, 2 insertions, 0 deletions
diff --git a/mailmap.h b/mailmap.h
index ed7c93b05c..d0e65646cb 100644
--- a/mailmap.h
+++ b/mailmap.h
@@ -1,6 +1,8 @@
 #ifndef MAILMAP_H
 #define MAILMAP_H
 
+struct string_list;
+
 int read_mailmap(struct string_list *map, char **repo_abbrev);
 void clear_mailmap(struct string_list *map);