diff --git a/install/judge/core/judge_client/judge_client.cc b/install/judge/core/judge_client/judge_client.cc
index 2e1a4c6b660cc085e902fda7721c8ebaecef26b2..2951037ea9b974d1bee0ce3aa129a979278ab426 100644
--- a/install/judge/core/judge_client/judge_client.cc
+++ b/install/judge/core/judge_client/judge_client.cc
@@ -2981,7 +2981,8 @@ int main(int argc, char **argv)
         if (DEBUG)
             printf("usedtime:%d\n", usedtime);
     }
-    update_coin(p_id,solution_id,user_id);
+    if(finalACflg == OJ_AC)
+        update_coin(p_id,solution_id,user_id);
     if (oi_mode)
     {
         if (num_of_test > 0)