1 files changed, 1 insertions, 0 deletions
diff --git a/attr.h b/attr.h
index 442d464db6..3185538bda 100644
--- a/attr.h
+++ b/attr.h
@@ -7,6 +7,7 @@ struct git_attr;
 /* opaque structures used internally for attribute collection */
 struct all_attrs_item;
 struct attr_stack;
+struct index_state;
 
 /*
  * Given a string, return the gitattribute object that