diff --git a/hal/src/main/native/systemcore/Counter.cpp b/hal/src/main/native/systemcore/Counter.cpp
index db3cdafe683..d551f86549b 100644
--- a/hal/src/main/native/systemcore/Counter.cpp
+++ b/hal/src/main/native/systemcore/Counter.cpp
@@ -4,6 +4,7 @@
 
 #include "hal/Counter.h"
 
+#include <cstdio>
 #include <limits>
 #include <memory>
 #include <thread>
diff --git a/wpilibc/src/main/native/cpp/counter/Tachometer.cpp b/wpilibc/src/main/native/cpp/counter/Tachometer.cpp
index 072aaec994e..e5730cd2ed8 100644
--- a/wpilibc/src/main/native/cpp/counter/Tachometer.cpp
+++ b/wpilibc/src/main/native/cpp/counter/Tachometer.cpp
@@ -4,6 +4,8 @@
 
 #include "frc/counter/Tachometer.h"
 
+#include <string>
+
 #include <frc/DigitalSource.h>
 
 #include <hal/Counter.h>
diff --git a/wpilibc/src/main/native/cpp/counter/UpDownCounter.cpp b/wpilibc/src/main/native/cpp/counter/UpDownCounter.cpp
index 7a70e31f974..da5e33ecda6 100644
--- a/wpilibc/src/main/native/cpp/counter/UpDownCounter.cpp
+++ b/wpilibc/src/main/native/cpp/counter/UpDownCounter.cpp
@@ -5,6 +5,7 @@
 #include "frc/counter/UpDownCounter.h"
 
 #include <memory>
+#include <string>
 
 #include <hal/Counter.h>
 #include <hal/FRCUsageReporting.h>