1 files changed, 1 insertions, 1 deletions
diff --git a/class.c b/class.c
index 7cc7551b62..7e2f40b0a3 100644
--- a/class.c
+++ b/class.c
@@ -1274,7 +1274,7 @@ rb_singleton_class(VALUE obj)
     VALUE klass = singleton_class_of(obj);
 
     /* ensures an exposed class belongs to its own eigenclass */
-    if (TYPE(obj) == T_CLASS) ENSURE_EIGENCLASS(klass);
+    if (TYPE(obj) == T_CLASS) (void)ENSURE_EIGENCLASS(klass);
 
     return klass;
 }