1 files changed, 1 insertions, 1 deletions
diff --git a/gc.c b/gc.c
index 1caa790202..14c1e3c7da 100644
--- a/gc.c
+++ b/gc.c
@@ -2941,7 +2941,7 @@ obj_memsize_of(VALUE obj, int use_all_types)
 	       BUILTIN_TYPE(obj), (void*)obj);
     }
 
-    return size;
+    return size + sizeof(RVALUE);
 }
 
 size_t