diff --git a/app/javascript/mastodon/features/compose/components/text_icon_button.jsx b/app/javascript/mastodon/features/compose/components/text_icon_button.jsx
index 46b5d7fad..166d022b8 100644
--- a/app/javascript/mastodon/features/compose/components/text_icon_button.jsx
+++ b/app/javascript/mastodon/features/compose/components/text_icon_button.jsx
@@ -4,7 +4,7 @@ import { PureComponent } from 'react';
 const iconStyle = {
   height: null,
   lineHeight: '27px',
-  width: `${18 * 1.28571429}px`,
+  minWidth: `${18 * 1.28571429}px`,
 };
 
 export default class TextIconButton extends PureComponent {