diff --git a/M17Utils.cpp b/M17Utils.cpp
index 4462c9b2..1b217b72 100644
--- a/M17Utils.cpp
+++ b/M17Utils.cpp
@@ -19,6 +19,7 @@
 #include "M17Utils.h"
 #include "M17Defines.h"
 
+#include <cstdint>
 #include <cassert>
 
 const std::string M17_CHARS = " ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-/.";
diff --git a/NullController.cpp b/NullController.cpp
index edfeffe0..eeb77175 100644
--- a/NullController.cpp
+++ b/NullController.cpp
@@ -19,6 +19,7 @@
 #include "NullController.h"
 
 #include <cstdio>
+#include <cstdint>
 #include <cassert>
 
 const unsigned char MMDVM_FRAME_START = 0xE0U;