diff --git a/phpBB/adm/style/admin.css b/phpBB/adm/style/admin.css
index b7c521a385..1421c9fa7b 100644
--- a/phpBB/adm/style/admin.css
+++ b/phpBB/adm/style/admin.css
@@ -1721,7 +1721,7 @@ fieldset.submit-buttons legend {
 	height: 40px;
 }
 
-.mention-media-avatar img { /* TODO: reconsider for the future design */
+.mention-media-avatar img { /* TODO: reconsider for the future design with 1:1 ratio images */
 	max-width: 100%;
 	max-height: 100%;
 }
diff --git a/phpBB/styles/prosilver/theme/mentions.css b/phpBB/styles/prosilver/theme/mentions.css
index 3400dde454..e35512f27a 100644
--- a/phpBB/styles/prosilver/theme/mentions.css
+++ b/phpBB/styles/prosilver/theme/mentions.css
@@ -43,7 +43,7 @@
 	height: 40px;
 }
 
-.mention-media-avatar img { /* TODO: reconsider for the future design */
+.mention-media-avatar img { /* TODO: reconsider for the future design with 1:1 ratio images */
 	max-width: 100%;
 	max-height: 100%;
 }