diff --git a/radio/src/edgetx_helpers.h b/radio/src/edgetx_helpers.h
index 082698887..b5104c246 100644
--- a/radio/src/edgetx_helpers.h
+++ b/radio/src/edgetx_helpers.h
@@ -23,6 +23,7 @@
 
 #include <string>
 #include <cstring>
+#include <cstdint>
 
 template<class T>
 inline T sgn(T a)