diff --git a/font-src-sample/charset.config.json b/font-src-sample/charset.config.json
index 2a88f86..d59b8de 100644
--- a/font-src-sample/charset.config.json
+++ b/font-src-sample/charset.config.json
@@ -1,4 +1,4 @@
  {
-    "charset": "!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~’“”",
+    "charset": " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~’“”",
     "presets": []
  }