1 files changed, 1 insertions, 1 deletions
diff --git a/mailmap.h b/mailmap.h
index 429a760945..cbda9bc5e0 100644
--- a/mailmap.h
+++ b/mailmap.h
@@ -4,7 +4,7 @@
 struct string_list;
 
 extern char *git_mailmap_file;
-extern const char *git_mailmap_blob;
+extern char *git_mailmap_blob;
 
 int read_mailmap(struct string_list *map);
 void clear_mailmap(struct string_list *map);