diff --git a/src/os_w32exe.c b/src/os_w32exe.c
index d7fd2a7..3beca19 100644
--- a/src/os_w32exe.c
+++ b/src/os_w32exe.c
@@ -38,13 +38,12 @@
 static void (_cdecl *pSaveInst)(HINSTANCE);
 #endif
 
-/*ARGSUSED*/
     int WINAPI
 WinMain(
-    HINSTANCE	hInstance,
-    HINSTANCE	hPrevInst,
+    HINSTANCE	hInstance UNUSED,
+    HINSTANCE	hPrevInst UNUSED,
     LPSTR	lpszCmdLine,
-    int		nCmdShow)
+    int		nCmdShow UNUSED)
 {
     int		argc = 0;
     char	**argv;