diff --git a/public/options/options.css b/public/options/options.css
index b36a802b..b68ce3dd 100644
--- a/public/options/options.css
+++ b/public/options/options.css
@@ -373,6 +373,7 @@ input[type='number'] {
     display: inline-block;
     width: 40px;
     height: 24px;
+    min-width: 40px;
 }
 
 .switch input {