diff --git a/src/modules/00_support/store/Main.ts b/src/modules/00_support/store/Main.ts
index 9f6085258..fcadc1f02 100644
--- a/src/modules/00_support/store/Main.ts
+++ b/src/modules/00_support/store/Main.ts
@@ -76,6 +76,9 @@ export const useSupportStore = defineStore("supportServiceStore", () => {
           v.lastMessage = r.content;
           v.updatedAt = r.updatedAt;
         }
+        if (currentIssue.value === r.issueId) {
+          v.unreadCount = 0;
+        }
         return v;
       });
     }