diff --git a/Source/SocketEngine.swift b/Source/SocketEngine.swift
index 6caf87e..7fa489e 100644
--- a/Source/SocketEngine.swift
+++ b/Source/SocketEngine.swift
@@ -372,6 +372,7 @@ public final class SocketEngine : NSObject, URLSessionDelegate, SocketEnginePoll
         
         self.sid = sid
         connected = true
+        pongsMissed = 0
         
         if let upgrades = json["upgrades"] as? [String] {
             upgradeWs = upgrades.contains("websocket")