diff --git a/reactos/dll/cpl/hdwwiz/hdwwiz.c b/reactos/dll/cpl/hdwwiz/hdwwiz.c
index ea304dd7ec6..d83317c7bd8 100644
--- a/reactos/dll/cpl/hdwwiz/hdwwiz.c
+++ b/reactos/dll/cpl/hdwwiz/hdwwiz.c
@@ -42,7 +42,7 @@ APPLET Applets[] =
 	{IDI_CPLICON, IDS_CPLNAME, IDS_CPLDESCRIPTION, Applet}
 };
 
-typedef BOOL (*PINSTALL_NEW_DEVICE)(HWND, LPGUID, PDWORD);
+typedef BOOL (WINAPI *PINSTALL_NEW_DEVICE)(HWND, LPGUID, PDWORD);
 
 LONG APIENTRY
 Applet(HWND hwnd, UINT uMsg, LONG wParam, LONG lParam)