diff --git a/jraft-core/src/main/java/com/alipay/sofa/jraft/option/ReadOnlyOption.java b/jraft-core/src/main/java/com/alipay/sofa/jraft/option/ReadOnlyOption.java
index 22640672a..b9fd79a8c 100644
--- a/jraft-core/src/main/java/com/alipay/sofa/jraft/option/ReadOnlyOption.java
+++ b/jraft-core/src/main/java/com/alipay/sofa/jraft/option/ReadOnlyOption.java
@@ -16,8 +16,6 @@
  */
 package com.alipay.sofa.jraft.option;
 
-import org.apache.commons.lang.StringUtils;
-
 import com.alipay.sofa.jraft.entity.EnumOutter;
 
 /**