diff --git a/commands/prefix.js b/commands/prefix.js
index 6d4659b5..cdbb946e 100644
--- a/commands/prefix.js
+++ b/commands/prefix.js
@@ -4,6 +4,6 @@ exports.run = (client, message, args) => {
     // Gets the prefix from the command (eg. "!prefix +" it will take the "+" from it)
     let newPrefix = message.content.split(" ").slice(1, 2)[0];
     // Now we have to save the file.
-    fs.writeFile(".././config.json", JSON.stringify(config), (err) => console.error);
+    fs.writeFile(".././config.json", JSON.stringify(newPrefix), (err) => console.error);
   }
 }
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