diff --git a/src/platform.h b/src/platform.h
index 306da1c..187d1b8 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -1,6 +1,8 @@
 
 #pragma once
 
+#include <functional>
+
 class Platform
 {
 private:
diff --git a/src/platform/platform_sdl.cxx b/src/platform/platform_sdl.cxx
index 4fe6cce..6f8c02e 100644
--- a/src/platform/platform_sdl.cxx
+++ b/src/platform/platform_sdl.cxx
@@ -1,6 +1,4 @@
 
-#include <functional>
-
 #include "../blupi.h"
 #include "../event.h"
 #include "../platform.h"