diff --git a/lib/basic/config/Themes.dart b/lib/basic/config/Themes.dart
index 8a14b1b..063723d 100644
--- a/lib/basic/config/Themes.dart
+++ b/lib/basic/config/Themes.dart
@@ -19,7 +19,7 @@ Future initFont() async {
 ThemeData _fontThemeData(bool dark) {
   return ThemeData(
     brightness: dark ? Brightness.dark : Brightness.light,
-    fontFamily: _fontFamily,
+    fontFamily: _fontFamily == "" ? null : _fontFamily,
   );
 }