diff --git a/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java b/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
index 4af59d52aae..de4ea4059e5 100644
--- a/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
+++ b/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
@@ -55,7 +55,10 @@
 import org.apache.zeppelin.user.AuthenticationInfo;
 import org.apache.zeppelin.user.Credentials;
 
-import static org.apache.commons.lang.StringUtils.*;
+import static org.apache.commons.lang.StringUtils.EMPTY;
+import static org.apache.commons.lang.StringUtils.isEmpty;
+import static org.apache.commons.lang.StringUtils.isNotEmpty;
+import static org.apache.commons.lang.StringUtils.isBlank;
 
 /**
  * Binded interpreters for a note