diff --git a/web/app/models/UOJBlog.php b/web/app/models/UOJBlog.php
index 0f0a5c7..6186e5a 100644
--- a/web/app/models/UOJBlog.php
+++ b/web/app/models/UOJBlog.php
@@ -211,7 +211,7 @@ class UOJBlog {
 
 	public function getSolutionProblemId() {
 		return DB::selectSingle([
-			DB::lc(), "select 1 from problems_solutions",
+			DB::lc(), "select problem_id from problems_solutions",
 			"where", [
 				"blog_id" => $this->info['id'],
 			],