1 files changed, 6 insertions, 2 deletions
diff --git a/win32.c b/win32.c
index 2f82559a0..7177d72a8 100644
--- a/win32.c
+++ b/win32.c
@@ -15,6 +15,11 @@
 
 #define SMART_PALETTE_ANIM
 
+/* Declare the revision tag for Windows */
+#ifdef WITH_REV_HACK
+	const char _openttd_revision[] = WITH_REV_HACK;
+#endif
+
 static struct {
 	HWND main_wnd;
 	HBITMAP dib_sect;
@@ -499,9 +504,8 @@ static void MakeWindow(bool full_screen)
 			SetWindowPos(_wnd.main_wnd, 0, x, y, w, h, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER);
 		} else {
 			char Windowtitle[50] = "OpenTTD ";
-			#ifdef WITH_REV_HACK
+			#ifdef WITH_REV
 				// also show revision number/release in window title
-				extern const char _openttd_revision[];
 				strncat(Windowtitle, _openttd_revision, sizeof(Windowtitle)-(strlen(Windowtitle) + 1));
 			#endif
 			_wnd.main_wnd = CreateWindow("TTD", Windowtitle, style, x, y, w, h, 0, 0, _inst, 0);