diff --git a/app/renderer/pref.html b/app/renderer/pref.html
index 05de566a..954c66e8 100644
--- a/app/renderer/pref.html
+++ b/app/renderer/pref.html
@@ -9,7 +9,7 @@
 		<div class="form">
 			<form onsubmit="prefDomain(); return false">
 				<input id="url" type="text" placeholder="Server URL">
-				<button type="submit" id="main" value="Submit" onclick="prefDomain();">
+				<button type="submit" id="main" value="Submit">
 				Switch</button>
 			</form>
 			<p id="urladded"><p>