diff --git a/lukeroberts/lukeroberts.cpp b/lukeroberts/lukeroberts.cpp
index b3009edd..6f35e82f 100644
--- a/lukeroberts/lukeroberts.cpp
+++ b/lukeroberts/lukeroberts.cpp
@@ -286,11 +286,11 @@ void LukeRoberts::onExternalApiEndpointCharacteristicChanged(const QLowEnergyCha
     if (characteristic.uuid() == m_externalApiEndpoint.uuid()) {
         qCDebug(dcLukeRoberts()) << "Data received" << value;
     }
+    uint8_t scene = static_cast<uint8_t>(value.at(2));
     if (value.length() > 4) { //its a scene
 
-
-        if (value.at(2) != 0xff) { //check it we are already at the end of the list
-            queryScene(value.at(2));
+        if (scene != 0xff) { //check it we are already at the end of the list
+            queryScene(scene);
         } else {
             emit sceneListReceived(m_sceneList);
         }