diff --git a/gcc/ada/rtfinal.c b/gcc/ada/rtfinal.c
index 88bbb0e3e500..0bd3ce4ace65 100644
--- a/gcc/ada/rtfinal.c
+++ b/gcc/ada/rtfinal.c
@@ -46,9 +46,7 @@ extern int __gnat_rt_init_count;
 /*  see initialize.c  */
 
 #if defined (__MINGW32__)
-#define WIN32_LEAN_AND_MEAN
 #include "mingw32.h"
-#include <windows.h>
 
 extern CRITICAL_SECTION ProcListCS;
 extern HANDLE ProcListEvt;
diff --git a/gcc/ada/rtinit.c b/gcc/ada/rtinit.c
index 6a135529870b..8638f0ac3e88 100644
--- a/gcc/ada/rtinit.c
+++ b/gcc/ada/rtinit.c
@@ -70,9 +70,8 @@ int __gnat_rt_init_count = 0;
    and finalize properly the run-time. */
 
 #if defined (__MINGW32__)
-#define WIN32_LEAN_AND_MEAN
+#include <stdlib.h>
 #include "mingw32.h"
-#include <windows.h>
 
 extern void __gnat_init_float (void);