diff --git a/src/widgets/msgbox/lv_msgbox.c b/src/widgets/msgbox/lv_msgbox.c
index d957fe0e0..875deea09 100644
--- a/src/widgets/msgbox/lv_msgbox.c
+++ b/src/widgets/msgbox/lv_msgbox.c
@@ -112,8 +112,8 @@ lv_obj_t * lv_msgbox_create(lv_obj_t * parent, const char * title, const char *
 
     mbox->content = lv_obj_class_create_obj(&lv_msgbox_content_class, obj);
     LV_ASSERT_MALLOC(obj);
-    if(obj == NULL) return NULL;
-    lv_obj_class_init_obj(obj);
+    if(mbox->content == NULL) return NULL;
+    lv_obj_class_init_obj(mbox->content);
 
     bool has_txt = txt && lv_strlen(txt) > 0;
     if(has_txt) {