diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/QuestionOptionUpdateDTO.java b/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/QuestionOptionUpdateDTO.java
index d54bbfb4..7a99ab59 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/QuestionOptionUpdateDTO.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/QuestionOptionUpdateDTO.java
@@ -5,6 +5,7 @@ import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 
 import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
 import java.io.Serializable;
 
 /**
@@ -20,7 +21,7 @@ public class QuestionOptionUpdateDTO implements Serializable {
     private Long id;
 
     @ApiModelProperty(value = "是否正确答案 true 是,false 不是", required = true)
-    @NotBlank(message = "是否正确答案不能为空")
+    @NotNull(message = "是否正确答案不能为空")
     private Boolean isCorrect;
 
     @ApiModelProperty(value = "选项标识：A,B,C,D", required = true)