diff --git a/SocketIOClientSwift/SocketEngine.swift b/SocketIOClientSwift/SocketEngine.swift
index acfb2bd..e5a6dc1 100644
--- a/SocketIOClientSwift/SocketEngine.swift
+++ b/SocketIOClientSwift/SocketEngine.swift
@@ -470,11 +470,11 @@ public final class SocketEngine: NSObject, SocketEngineSpec, WebSocketDelegate {
             if self.connected {
                 if self.websocket {
                     DefaultSocketLogger.Logger.log("Writing ws: %@ has data: %@",
-                        type: self.logType, args: msg, data.count == 0)
+                        type: self.logType, args: msg, data.count != 0)
                     self.sendWebSocketMessage(msg, withType: type, datas: data)
                 } else {
                     DefaultSocketLogger.Logger.log("Writing poll: %@ has data: %@",
-                        type: self.logType, args: msg, data.count == 0)
+                        type: self.logType, args: msg, data.count != 0)
                     self.sendPollMessage(msg, withType: type, datas: data)
                 }
             }