diff --git a/src/font.h b/src/font.h
index 21e821e6e7120c4ac3bc3d22aedb9889207a925d..d93caef3deee093a8329291aaaa3d80476f2a116 100644
--- a/src/font.h
+++ b/src/font.h
@@ -589,6 +589,7 @@ extern struct font_driver xftfont_driver;
 #endif	/* HAVE_X_WINDOWS */
 #ifdef WINDOWSNT
 extern struct font_driver w32font_driver;
+extern struct font_driver uniscribe_font_driver;
 #endif	/* WINDOWSNT */
 #ifdef MAC_OS
 extern struct font_driver atmfont_driver;