diff --git a/src/main/java/org/java_websocket/drafts/Draft_6455.java b/src/main/java/org/java_websocket/drafts/Draft_6455.java
index eb4879976..f9f960d25 100644
--- a/src/main/java/org/java_websocket/drafts/Draft_6455.java
+++ b/src/main/java/org/java_websocket/drafts/Draft_6455.java
@@ -1192,7 +1192,7 @@ private long getByteBufferListSize() {
     return totalSize;
   }
 
-  private class TranslatedPayloadMetaData {
+  private static class TranslatedPayloadMetaData {
 
     private int payloadLength;
     private int realPackageSize;