diff --git a/app/src/main/java/com/hippo/nimingban/client/ac/ACEngine.java b/app/src/main/java/com/hippo/nimingban/client/ac/ACEngine.java
index 4b16ebba..c56e496f 100644
--- a/app/src/main/java/com/hippo/nimingban/client/ac/ACEngine.java
+++ b/app/src/main/java/com/hippo/nimingban/client/ac/ACEngine.java
@@ -578,7 +578,7 @@ public static Void doCreatePost(Call call) throws Exception {
         }
     }
 
-    private static final long MAX_IMAGE_SIZE = 2 * 1024 * 1024;
+    private static final long MAX_IMAGE_SIZE = 2000 * 1024;
 
     /**
      * @return null for not changed