1 files changed, 1 insertions, 0 deletions
diff --git a/intern.h b/intern.h
index d0938df5e1..8f1a78ba94 100644
--- a/intern.h
+++ b/intern.h
@@ -186,6 +186,7 @@ VALUE rb_hash_new _((void));
 VALUE rb_hash_freeze _((VALUE));
 VALUE rb_hash_aref _((VALUE, VALUE));
 VALUE rb_hash_aset _((VALUE, VALUE, VALUE));
+VALUE rb_hash_delete_if _((VALUE));
 int rb_path_check _((char *));
 int rb_env_path_tainted _((void));
 /* io.c */