diff --git a/ghost/admin/lib/koenig-editor/addon/templates/components/koenig-card-image.hbs b/ghost/admin/lib/koenig-editor/addon/templates/components/koenig-card-image.hbs
index f278ca684d..35bf4b402f 100644
--- a/ghost/admin/lib/koenig-editor/addon/templates/components/koenig-card-image.hbs
+++ b/ghost/admin/lib/koenig-editor/addon/templates/components/koenig-card-image.hbs
@@ -80,7 +80,7 @@
         {{#if isSelected}}
             <button
                 title="Toggle between editing alt text and caption"
-                class="absolute right-0 bottom-0 ma2 pl1 pr1 ba br3 f7 sans-serif fw4 lh-title tracked-2 {{if this.isEditingAlt "bg-blue b--blue white" "b--midlightgrey midlightgrey"}}"
+                class="absolute right-0 bottom-0 ma2 pl1 pr1 ba br3 f8 sans-serif fw4 lh-title tracked-2 bg-white {{if this.isEditingAlt "bg-blue b--blue white" "b--midlightgrey midlightgrey"}}"
                 {{on "click" this.toggleAltEditing passive=true}}
             >
                 Alt