diff --git a/mail/components/compose/content/dialogs/EdImageProps.xhtml b/mail/components/compose/content/dialogs/EdImageProps.xhtml
index bf13ee06c7..162f906bf1 100644
--- a/mail/components/compose/content/dialogs/EdImageProps.xhtml
+++ b/mail/components/compose/content/dialogs/EdImageProps.xhtml
@@ -34,7 +34,7 @@
     href="chrome://messenger/skin/shared/grid-layout.css"
   />
 
-  <dialog id="imageDlg" buttons="accept,cancel" style="width: 60ch">
+  <dialog id="imageDlg" buttons="accept,cancel" style="width: 68ch">
     <script src="chrome://messenger/content/globalOverlay.js" />
     <script src="chrome://global/content/editMenuOverlay.js" />
     <script src="chrome://messenger/content/messengercompose/editorUtilities.js" />