diff --git a/app/src/main/java/com/hippo/nimingban/util/DB.java b/app/src/main/java/com/hippo/nimingban/util/DB.java
index 7ff2c0b6..3f76eb3b 100644
--- a/app/src/main/java/com/hippo/nimingban/util/DB.java
+++ b/app/src/main/java/com/hippo/nimingban/util/DB.java
@@ -400,6 +400,7 @@ public static void initialize(Context context) {
             helper.clearUpgrade();
 
             switch (helper.getOldVersion()) {
+                case 1:
                 case 2:
                     insertDefaultACCommonPosts();
                 case 3: