diff --git a/src/main.cpp b/src/main.cpp
index 4fb617f..ded388c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -46,7 +46,7 @@ bool wifiConnected = false;
 
 TaskHandle_t nukiTaskHandle = nullptr;
 
-int64_t restartTs = ((2^64) - (5 * 1000 * 60000)) / 1000;
+int64_t restartTs = (pow(2,64) - (5 * 1000 * 60000)) / 1000;
 
 #else
 #include "../../src/WebCfgServer.h"