diff --git a/shared/db/ComBattleTeam.ts b/shared/db/ComBattleTeam.ts
index bfc2f8b17..6e2c7b0bd 100644
--- a/shared/db/ComBattleTeam.ts
+++ b/shared/db/ComBattleTeam.ts
@@ -122,8 +122,9 @@ export class RoleStatus {
     addFrdRatio(frdRatio: number) {
         if(!this.frdRatio) {
             this.frdRatio = frdRatio;
-        } else {
-            this.frdRatio += frdRatio;
+        }
+        if(this.frdRatio < frdRatio) {
+            this.frdRatio = frdRatio;
         }
     }