diff --git a/FlippR-Driver/src/PinController.cpp b/FlippR-Driver/src/PinController.cpp
index 6a748ea..c0761d5 100644
--- a/FlippR-Driver/src/PinController.cpp
+++ b/FlippR-Driver/src/PinController.cpp
@@ -12,6 +12,7 @@
 #include <wiringPi.h>
 #include <mcp23017.h>
 #else
+#warning "Include testing wiringPi library"
 #include "utility/wiringPiTesting.hpp"
 #endif