1 files changed, 2 insertions, 3 deletions
diff --git a/object.c b/object.c
index 5b0f7dfdd7..3126ed01e6 100644
--- a/object.c
+++ b/object.c
@@ -206,9 +206,8 @@ rb_obj_not_equal(VALUE obj1, VALUE obj2)
 VALUE
 rb_class_real(VALUE cl)
 {
-    if (cl == 0)
-        return 0;
-    while ((RBASIC(cl)->flags & FL_SINGLETON) || BUILTIN_TYPE(cl) == T_ICLASS) {
+    while (cl &&
+        ((RBASIC(cl)->flags & FL_SINGLETON) || BUILTIN_TYPE(cl) == T_ICLASS)) {
 	cl = RCLASS_SUPER(cl);
     }
     return cl;