diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/config/EsConfig.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/config/EsConfig.java
index ae6ffb4af29795dc3ed5e85fa849b35351dcaf1e..dae5f3f5c4c239bb43f138c439f89d2f534a55d1 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/config/EsConfig.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/config/EsConfig.java
@@ -32,6 +32,8 @@ public class EsConfig {
     }
 
     public enum IndexInitMode {
-        auto, forced, manual
+        AUTO,
+        FORCED,
+        MANUAL
     }
 }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/IndexCreator.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/IndexCreator.java
index 973ea1ee0526f28e28dc57addab529d4434ba29b..562ee0bdf11a82598a7dcd0c9788cc2158f3fafd 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/IndexCreator.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/IndexCreator.java
@@ -17,12 +17,12 @@ public enum IndexCreator {
     private Logger logger = LogManager.getFormatterLogger(IndexCreator.class);
 
     public void create() {
-        if (!EsConfig.IndexInitMode.manual.equals(EsConfig.Es.Index.Initialize.mode)) {
+        if (!EsConfig.IndexInitMode.MANUAL.equals(EsConfig.Es.Index.Initialize.mode)) {
             Set<AbstractIndex> indexSet = loadIndex();
             for (AbstractIndex index : indexSet) {
                 boolean isExists = index.isExists();
                 if (isExists) {
-                    if (EsConfig.IndexInitMode.forced.equals(EsConfig.Es.Index.Initialize.mode)) {
+                    if (EsConfig.IndexInitMode.FORCED.equals(EsConfig.Es.Index.Initialize.mode)) {
                         index.deleteIndex();
                         index.createIndex();
                     }
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/IndexCreatorTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/IndexCreatorTestCase.java
index 52eaf2c1cbf3b2b194918c1edb4cdb5b916a30c7..cd17746c15e77f008b9776ceac9f1932888180a5 100644
--- a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/IndexCreatorTestCase.java
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/IndexCreatorTestCase.java
@@ -65,7 +65,7 @@ public class IndexCreatorTestCase {
 
     @Test
     public void testCreateOptionManual() throws Exception {
-        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.manual;
+        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.MANUAL;
         indexCreator.create();
         Mockito.verify(testIndex, Mockito.never()).createIndex();
         Mockito.verify(testIndex, Mockito.never()).deleteIndex();
@@ -73,7 +73,7 @@ public class IndexCreatorTestCase {
 
     @Test
     public void testCreateOptionForcedIndexIsExists() throws Exception {
-        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.forced;
+        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.FORCED;
         when(testIndex.isExists()).thenReturn(true);
         indexCreator.create();
         Mockito.verify(testIndex).createIndex();
@@ -82,7 +82,7 @@ public class IndexCreatorTestCase {
 
     @Test
     public void testCreateOptionForcedIndexNotExists() throws Exception {
-        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.forced;
+        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.FORCED;
         when(testIndex.isExists()).thenReturn(false);
         indexCreator.create();
         Mockito.verify(testIndex).createIndex();
@@ -91,7 +91,7 @@ public class IndexCreatorTestCase {
 
     @Test
     public void testCreateOptionAutoIndexNotExists() throws Exception {
-        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.auto;
+        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.AUTO;
         when(testIndex.isExists()).thenReturn(false);
         indexCreator.create();
         Mockito.verify(testIndex).createIndex();
@@ -100,7 +100,7 @@ public class IndexCreatorTestCase {
 
     @Test
     public void testCreateOptionAutoIndexExists() throws Exception {
-        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.auto;
+        EsConfig.Es.Index.Initialize.mode = EsConfig.IndexInitMode.AUTO;
         when(testIndex.isExists()).thenReturn(true);
         indexCreator.create();
         Mockito.verify(testIndex, Mockito.never()).createIndex();