1 files changed, 1 insertions, 0 deletions
diff --git a/src/kernel.c b/src/kernel.c
index 9aec33d67..25863c897 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -309,6 +309,7 @@ init_copy(mrb_state *mrb, mrb_value dest, mrb_value obj)
       case MRB_TT_CLASS:
       case MRB_TT_MODULE:
         copy_class(mrb, dest, obj);
+        /* fall through */
       case MRB_TT_OBJECT:
       case MRB_TT_SCLASS:
       case MRB_TT_HASH: