diff --git a/app/src/main/cpp/PhoneDevice.h b/app/src/main/cpp/PhoneDevice.h
index 5c879db7..e4893d3d 100644
--- a/app/src/main/cpp/PhoneDevice.h
+++ b/app/src/main/cpp/PhoneDevice.h
@@ -387,9 +387,9 @@ protected:
 	unsigned int mVersionCode;
 	time_t mBuildTime;
 
-	atomic_ulong m_timerUidFeed;
-    atomic_ulong m_wakelockIdFeed;
-    atomic_ulong m_uniqueIdFeed;
+    atomic_ullong m_timerUidFeed;
+    atomic_ullong m_wakelockIdFeed;
+    atomic_ullong m_uniqueIdFeed;
 	std::map<IDevice::timer_uid_t, TIMER_CONTEXT*> mTimers;
 
 	mutable CPhoneCamera*	mCamera;