diff --git a/src/main/java/opendataio/ratisshell/cli/sh/command/AbstractRatisCommand.java b/src/main/java/opendataio/ratisshell/cli/sh/command/AbstractRatisCommand.java
index ef6ef76..3d670ad 100644
--- a/src/main/java/opendataio/ratisshell/cli/sh/command/AbstractRatisCommand.java
+++ b/src/main/java/opendataio/ratisshell/cli/sh/command/AbstractRatisCommand.java
@@ -101,8 +101,8 @@ public int run(CommandLine cl) throws IOException {
                 .findFirst();
         if (!raftGroupId.isPresent()) {
           mPrintStream.println(
-              "there are more than one group, you should specific one." +
-                  groupIds);
+              "there are more than one group, you should specific one."
+                  + groupIds);
           return -1;
         } else {
           remoteGroupId = raftGroupId.get();
diff --git a/src/main/java/opendataio/ratisshell/cli/sh/command/ElectCommand.java b/src/main/java/opendataio/ratisshell/cli/sh/command/ElectCommand.java
index 96e5067..4e78c31 100644
--- a/src/main/java/opendataio/ratisshell/cli/sh/command/ElectCommand.java
+++ b/src/main/java/opendataio/ratisshell/cli/sh/command/ElectCommand.java
@@ -10,7 +10,6 @@
 import org.apache.ratis.protocol.RaftPeerId;
 
 import java.io.IOException;
-import java.net.InetSocketAddress;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;