diff --git a/wpilibc/wpilibC++Devices/include/CounterBase.h b/wpilibc/wpilibC++Devices/include/CounterBase.h
index 9596829ca0..f475ddfefb 100644
--- a/wpilibc/wpilibC++Devices/include/CounterBase.h
+++ b/wpilibc/wpilibC++Devices/include/CounterBase.h
@@ -5,6 +5,8 @@
 /*----------------------------------------------------------------------------*/
 #pragma once
 
+#include <stdint.h>
+
 /**
  * Interface for counting the number of ticks on a digital input channel.
  * Encoders, Gear tooth sensors, and counters should all subclass this so it can