diff --git a/src/components/compose.css b/src/components/compose.css
index e81ceb52..cbf94bc0 100644
--- a/src/components/compose.css
+++ b/src/components/compose.css
@@ -106,6 +106,7 @@
 #compose-container .toolbar-button > * {
   vertical-align: middle;
   cursor: inherit;
+  outline: 0;
 }
 #compose-container .toolbar-button:has([disabled]) {
   cursor: not-allowed;