diff --git a/gcc/objc/objects.c b/gcc/objc/objects.c
index aad1610e4ce..5c64fdaaf51 100644
--- a/gcc/objc/objects.c
+++ b/gcc/objc/objects.c
@@ -43,7 +43,7 @@ class_create_instance(Class* class)
     new = (*_objc_object_alloc)(class);
   if (new!=nil)
     {
-      memchr (new, 0, class->instance_size);
+      memset (new, 0, class->instance_size);
       new->class_pointer = class;
     }
   return new;