diff --git a/src/stdlg.c b/src/stdlg.c
index bd65fa42401..3760bdb47fe 100644
--- a/src/stdlg.c
+++ b/src/stdlg.c
@@ -1445,7 +1445,7 @@ void SetFidoCheck(void)
 		return;
 	}
 
-	if (nWindowsVersion < WINDOWS_8) {
+	if (WindowsVersion.Version < WINDOWS_8) {
 		ubprintf("Notice: The ISO download feature has been deactivated because "
 			"your version of Windows is too old.");
 		return;