diff --git a/components/inbound-endpoints/org.wso2.carbon.inbound.endpoint/src/main/java/org/wso2/carbon/inbound/endpoint/protocol/websocket/InboundWebsocketSourceHandler.java b/components/inbound-endpoints/org.wso2.carbon.inbound.endpoint/src/main/java/org/wso2/carbon/inbound/endpoint/protocol/websocket/InboundWebsocketSourceHandler.java
index a05f351d15e..559bcdc81d7 100644
--- a/components/inbound-endpoints/org.wso2.carbon.inbound.endpoint/src/main/java/org/wso2/carbon/inbound/endpoint/protocol/websocket/InboundWebsocketSourceHandler.java
+++ b/components/inbound-endpoints/org.wso2.carbon.inbound.endpoint/src/main/java/org/wso2/carbon/inbound/endpoint/protocol/websocket/InboundWebsocketSourceHandler.java
@@ -101,8 +101,8 @@ public class InboundWebsocketSourceHandler extends ChannelInboundHandlerAdapter
     private int port;
     private boolean dispatchToCustomSequence;
     private InboundWebsocketResponseSender responseSender;
-    private static ArrayList<String> contentTypes = new ArrayList<>();
-    private static ArrayList<String> otherSubprotocols = new ArrayList<>();
+    private ArrayList<String> contentTypes = new ArrayList<>();
+    private ArrayList<String> otherSubprotocols = new ArrayList<>();
     private int clientBroadcastLevel;
     private String outflowDispatchSequence;
     private String outflowErrorSequence;
@@ -115,20 +115,14 @@ public class InboundWebsocketSourceHandler extends ChannelInboundHandlerAdapter
     private InboundApiHandler inboundApiHandler = new InboundApiHandler();
     private static final AttributeKey<Map<String, Object>> WSO2_PROPERTIES = AttributeKey.valueOf("WSO2_PROPERTIES");
 
-    static {
+    public InboundWebsocketSourceHandler() throws Exception {
         contentTypes.add("application/xml");
         contentTypes.add("application/json");
         contentTypes.add("text/xml");
-    }
-
-    static {
         otherSubprotocols.add("graphql-ws");
         otherSubprotocols.add("graphql-transport-ws");
     }
 
-    public InboundWebsocketSourceHandler() throws Exception {
-    }
-
     public void setSubprotocolHandlers(ArrayList<AbstractSubprotocolHandler> subprotocolHandlers) {
         this.subprotocolHandlers = subprotocolHandlers;
         for (AbstractSubprotocolHandler handler : subprotocolHandlers) {