diff --git a/src/NukiOpenerWrapper.cpp b/src/NukiOpenerWrapper.cpp
index de688fc..9a66993 100644
--- a/src/NukiOpenerWrapper.cpp
+++ b/src/NukiOpenerWrapper.cpp
@@ -142,8 +142,8 @@ void NukiOpenerWrapper::update()
         }
     }
 
-    unsigned long ts = millis();
-    unsigned long lastReceivedBeaconTs = _nukiOpener.getLastReceivedBeaconTs();
+    long ts = millis();
+    long lastReceivedBeaconTs = _nukiOpener.getLastReceivedBeaconTs();
     uint8_t queryCommands = _network->queryCommands();
 
     if(_restartBeaconTimeout > 0 &&
diff --git a/src/NukiWrapper.cpp b/src/NukiWrapper.cpp
index 2753bc6..1525028 100644
--- a/src/NukiWrapper.cpp
+++ b/src/NukiWrapper.cpp
@@ -213,8 +213,8 @@ void NukiWrapper::update()
         }
     }
 
-    unsigned long ts = millis();
-    unsigned long lastReceivedBeaconTs = _nukiLock.getLastReceivedBeaconTs();
+    long ts = millis();
+    long lastReceivedBeaconTs = _nukiLock.getLastReceivedBeaconTs();
     uint8_t queryCommands = _network->queryCommands();
 
     if(_restartBeaconTimeout > 0 &&