1 files changed, 1 insertions, 0 deletions
diff --git a/eval.c b/eval.c
index d35b9b7395..1daf12e6c1 100644
--- a/eval.c
+++ b/eval.c
@@ -6878,6 +6878,7 @@ mnew(klass, obj, id, mklass)
 	goto again;
     }
 
+    if (TYPE(klass) == T_ICLASS) klass = RBASIC(klass)->klass;
     method = Data_Make_Struct(mklass, struct METHOD, bm_mark, free, data);
     data->klass = klass;
     data->recv = obj;