diff --git a/phpBB/adm/style/admin.css b/phpBB/adm/style/admin.css
index e48edf49cf..b0f9141d5b 100644
--- a/phpBB/adm/style/admin.css
+++ b/phpBB/adm/style/admin.css
@@ -1721,11 +1721,6 @@ fieldset.submit-buttons legend {
 	height: 40px;
 }
 
-.mention-media-avatar img { /* TODO: reconsider for the future design with 1:1 ratio images */
-	max-width: 100%;
-	max-height: 100%;
-}
-
 .mention-item {
 	font-size: 16px;
 	font-weight: 400;
diff --git a/phpBB/styles/prosilver/theme/mentions.css b/phpBB/styles/prosilver/theme/mentions.css
index cec8e3fe5d..a12ad8178c 100644
--- a/phpBB/styles/prosilver/theme/mentions.css
+++ b/phpBB/styles/prosilver/theme/mentions.css
@@ -43,11 +43,6 @@
 	height: 40px;
 }
 
-.mention-media-avatar img { /* TODO: reconsider for the future design with 1:1 ratio images */
-	max-width: 100%;
-	max-height: 100%;
-}
-
 .mention-item {
 	font-size: 16px;
 	font-weight: 400;