1 files changed, 2 insertions, 2 deletions
diff --git a/class.c b/class.c
index 26b2ba7f28..45dcf417b1 100644
--- a/class.c
+++ b/class.c
@@ -695,8 +695,8 @@ rb_singleton_class(obj)
 
     DEFER_INTS;
     if (FL_TEST(RBASIC(obj)->klass, FL_SINGLETON) &&
-	(BUILTIN_TYPE(obj) == T_CLASS || BUILTIN_TYPE(obj) == T_MODULE) &&
-	rb_iv_get(RBASIC(obj)->klass, "__attached__") == obj) {
+       ((BUILTIN_TYPE(obj) != T_CLASS && BUILTIN_TYPE(obj) != T_MODULE) ||
+       rb_iv_get(RBASIC(obj)->klass, "__attached__") == obj)) {
 	klass = RBASIC(obj)->klass;
     }
     else {