diff --git a/Source/Core/Core/FreeLookManager.cpp b/Source/Core/Core/FreeLookManager.cpp
index 7cf64a08fa..4c5596588d 100644
--- a/Source/Core/Core/FreeLookManager.cpp
+++ b/Source/Core/Core/FreeLookManager.cpp
@@ -160,7 +160,7 @@ void FreeLookController::LoadDefaults(const ControllerInterface& ciface)
                                         "if(`Click 3`,`RelativeMouse Y-` * 0.10, 0)");
   m_rotation_gyro->SetControlExpression(GyroButtons::PitchDown,
                                         "if(`Click 3`,`RelativeMouse Y+` * 0.10, 0)");
-#elif __APPLE__
+#elif defined(__APPLE__)
   m_rotation_gyro->SetControlExpression(GyroButtons::PitchUp,
                                         "if(`Left Click`,`RelativeMouse Y-` * 0.10, 0)");
   m_rotation_gyro->SetControlExpression(GyroButtons::PitchDown,
@@ -191,7 +191,7 @@ void FreeLookController::LoadDefaults(const ControllerInterface& ciface)
                                         "if(`Click 3`,`RelativeMouse X-` * 0.10, 0)");
   m_rotation_gyro->SetControlExpression(GyroButtons::YawRight,
                                         "if(`Click 3`,`RelativeMouse X+` * 0.10, 0)");
-#elif __APPLE__
+#elif defined(__APPLE__)
   m_rotation_gyro->SetControlExpression(GyroButtons::YawLeft,
                                         "if(`Right Click`,`RelativeMouse X-` * 0.10, 0)");
   m_rotation_gyro->SetControlExpression(GyroButtons::YawRight,