diff --git a/src/bp-activity/bp-activity-embeds.php b/src/bp-activity/bp-activity-embeds.php
index 30181cc80..0c9f53263 100644
--- a/src/bp-activity/bp-activity-embeds.php
+++ b/src/bp-activity/bp-activity-embeds.php
@@ -267,7 +267,7 @@ EOD;
 			$float_width = 350;
 
 			// Set up thumb.
-			$content = sprintf( '<div class="thumb" style="max-width:%1$spx">%2$s<a href="%3$s" rel="nofollow" onclick="top.location.href=\'%3$s\'"><img src="%4$s" /></a></div>', $thumb_width, $play_icon, esc_url( $url ), esc_url( $thumbnail ) );
+			$content = sprintf( '<div class="thumb" style="max-width:%1$spx">%2$s<a href="%3$s" rel="nofollow" onclick="top.location.href=\'%3$s\'"><img src="%4$s" alt="" /></a></div>', $thumb_width, $play_icon, esc_url( $url ), esc_url( $thumbnail ) );
 
 			// Show title.
 			if ( isset( $oembed->title ) ) {
diff --git a/src/bp-activity/js/mentions.js b/src/bp-activity/js/mentions.js
index 1c1126ae6..17407faaf 100644
--- a/src/bp-activity/js/mentions.js
+++ b/src/bp-activity/js/mentions.js
@@ -232,7 +232,7 @@ window.bp = window.bp || {};
 
 			at:         '@',
 			searchKey:  'search',
-			displayTpl: '<li data-value="@${ID}"><img src="${image}" /><span class="username">@${ID}</span><small>${name}</small></li>'
+			displayTpl: '<li data-value="@${ID}"><img src="${image}" alt="" /><span class="username">@${ID}</span><small>${name}</small></li>'
 		},
 
 		opts = $.extend( true, {}, suggestionsDefaults, mentionsDefaults, options );