diff --git a/dll/3rdparty/mbedtls/mbedtls.rc b/dll/3rdparty/mbedtls/mbedtls.rc
index 57b99b69ebe..c896a1c9f93 100644
--- a/dll/3rdparty/mbedtls/mbedtls.rc
+++ b/dll/3rdparty/mbedtls/mbedtls.rc
@@ -1,4 +1,5 @@
 #include <windef.h>
+#include <winuser.h>
 #define MBEDTLS_CONFIG_H
 #include <mbedtls/version.h>
 
diff --git a/dll/win32/serialui/serialui.rc b/dll/win32/serialui/serialui.rc
index ced6e9c9f8a..961054040f1 100644
--- a/dll/win32/serialui/serialui.rc
+++ b/dll/win32/serialui/serialui.rc
@@ -1,4 +1,5 @@
 #include <windef.h>
+#include <winuser.h>
 
 #include "resource.h"