diff --git a/src/WebSocketsClient.cpp b/src/WebSocketsClient.cpp
index c0ff360..819af0e 100644
--- a/src/WebSocketsClient.cpp
+++ b/src/WebSocketsClient.cpp
@@ -616,14 +616,16 @@ void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {
 
             runCbEvent(WStype_CONNECTED, (uint8_t *) client->cUrl.c_str(), client->cUrl.length());
 
-        } else if(clientIsConnected(client) && client->isSocketIO && client->cSessionId.length() > 0) {
-            sendHeader(client);
-        } else {
-            DEBUG_WEBSOCKETS("[WS-Client][handleHeader] no Websocket connection close.\n");
-            client->tcp->write("This is a webSocket client!");
-            clientDisconnect(client);
-        }
-    }
+		} else if(clientIsConnected(client) && client->isSocketIO && client->cSessionId.length() > 0) {
+			sendHeader(client);
+		} else {
+			DEBUG_WEBSOCKETS("[WS-Client][handleHeader] no Websocket connection close.\n");
+			if(clientIsConnected(client)) {
+				client->tcp->write("This is a webSocket client!");
+			}
+			clientDisconnect(client);
+		}
+	}
 }
 
 void WebSocketsClient::connectedCb() {