diff --git a/src/main/java/com/kiisoo/ic/activity/listener/WelcomeCreatedListener.java b/src/main/java/com/kiisoo/ic/activity/listener/WelcomeCreatedListener.java
index 9dacd9f..df07251 100644
--- a/src/main/java/com/kiisoo/ic/activity/listener/WelcomeCreatedListener.java
+++ b/src/main/java/com/kiisoo/ic/activity/listener/WelcomeCreatedListener.java
@@ -55,7 +55,9 @@ public class WelcomeCreatedListener {
         saveStores = saveStores.stream().collect(
                 Collectors.collectingAndThen(Collectors.toCollection(() -> new TreeSet<>(Comparator.comparing(o -> o.getStoreId()))),
                         ArrayList::new));
-        pmnActivityStoreRelationService.remove(Wrappers.<PmnActivityStoreRelation>lambdaQuery().eq(PmnActivityStoreRelation::getInstanceId, event.instance().getId()).notIn(PmnActivityStoreRelation::getStoreId, hasStores));
+        if(hasStores.size() > 0) {
+            pmnActivityStoreRelationService.remove(Wrappers.<PmnActivityStoreRelation>lambdaQuery().eq(PmnActivityStoreRelation::getInstanceId, event.instance().getId()).notIn(PmnActivityStoreRelation::getStoreId, storeIds));
+        }
         pmnActivityStoreRelationService.saveBatch(saveStores);
     }
 }
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 556dec4..acbf271 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -13,5 +13,9 @@ spring:
     view:
       prefix: /
       suffix: .html
+  servlet:
+    multipart:
+      enabled: true
+      max-file-size: -1