diff --git a/modules/access/wasapi.c b/modules/access/wasapi.c
index 0311c672de..3716f3329b 100644
--- a/modules/access/wasapi.c
+++ b/modules/access/wasapi.c
@@ -24,6 +24,8 @@
 # include "config.h"
 #endif
 
+#include <windows.h>
+
 #include <initguid.h>
 #define COBJMACROS
 
@@ -34,7 +36,6 @@
 #define _DECL_DLLMAIN
 #include <process.h>
 #include <vlc_common.h>
-#include <windows.h>
 #include <vlc_aout.h>
 #include <vlc_demux.h>
 #include <vlc_plugin.h>
@@ -75,7 +76,7 @@ static msftime_t GetQPC_100ns(void)
 
 static msftime_t (*get_qpc)(void);
 
-int __stdcall DllMain(void *dll, unsigned long reason, void *reserved)
+int __stdcall DllMain(void *dll, DWORD reason, void *reserved)
 {
     (void) dll;
     (void) reserved;
diff --git a/src/win32/thread.c b/src/win32/thread.c
index ddd4d8571a..d41d8dbe31 100644
--- a/src/win32/thread.c
+++ b/src/win32/thread.c
@@ -30,6 +30,7 @@
 #endif
 
 #define _DECL_DLLMAIN
+#include <windows.h>
 #include <process.h>
 #include <vlc_common.h>
 #include <vlc_threads.h>
@@ -685,7 +686,7 @@ void vlc_threads_setup(libvlc_int_t *vlc)
 
 #define LOOKUP(s) (((s##_) = (s##_ptr)GetProcAddress(h, #s)) != NULL)
 
-int __stdcall DllMain (void *hinstDll, unsigned long fdwReason, void *lpvReserved)
+int __stdcall DllMain (void *hinstDll, DWORD fdwReason, void *lpvReserved)
 {
     (void) hinstDll;
     (void) lpvReserved;