diff --git a/src/lib/mathlib/math/Expo.hpp b/src/lib/mathlib/math/Expo.hpp
index ff9f3d9a8240..46ccb83a1978 100644
--- a/src/lib/mathlib/math/Expo.hpp
+++ b/src/lib/mathlib/math/Expo.hpp
@@ -42,13 +42,13 @@
 #pragma once
 
 #include <platforms/px4_defines.h>
-#include <stdint.h>
 
 namespace math
 {
 
 // Type-safe signum function
-template<typename T> int sign(T val)
+template<typename T>
+int sign(T val)
 {
 	return (T(0) < val) - (val < T(0));
 }
diff --git a/src/lib/mathlib/math/Limits.hpp b/src/lib/mathlib/math/Limits.hpp
index 6215b8f955b0..94652943cda5 100644
--- a/src/lib/mathlib/math/Limits.hpp
+++ b/src/lib/mathlib/math/Limits.hpp
@@ -40,7 +40,6 @@
 #pragma once
 
 #include <platforms/px4_defines.h>
-#include <stdint.h>
 
 //this should be defined in stdint.h, but seems to be missing in the ARM toolchain (5.2.0)
 #ifndef UINT64_C