diff --git a/src/main/java/run/halo/app/model/params/JournalParam.java b/src/main/java/run/halo/app/model/params/JournalParam.java
index 98d97c538..7e5bd1ab1 100644
--- a/src/main/java/run/halo/app/model/params/JournalParam.java
+++ b/src/main/java/run/halo/app/model/params/JournalParam.java
@@ -6,7 +6,6 @@ import run.halo.app.model.entity.Journal;
 import run.halo.app.model.enums.JournalType;
 
 import javax.validation.constraints.NotBlank;
-import javax.validation.constraints.Size;
 
 /**
  * Journal param.
@@ -19,7 +18,6 @@ import javax.validation.constraints.Size;
 public class JournalParam implements InputConverter<Journal> {
 
     @NotBlank(message = "内容不能为空")
-    @Size(max = 511, message = "内容的字符长度不能超过 {max}")
     private String sourceContent;
 
     private JournalType type = JournalType.PUBLIC;