1 files changed, 1 insertions, 1 deletions
diff --git a/src/etc.c b/src/etc.c
index eac71459c..6d748c3d1 100644
--- a/src/etc.c
+++ b/src/etc.c
@@ -23,7 +23,7 @@ mrb_data_object_alloc(mrb_state *mrb, struct RClass *klass, void *ptr, const str
 {
   struct RData *data;
 
-  data = mrb_obj_alloc(mrb, MRB_TT_DATA, klass);
+  data = (struct RData *) mrb_obj_alloc(mrb, MRB_TT_DATA, klass);
   data->data = ptr;
   data->type = (struct mrb_data_type *) type;