diff --git a/apps/comments/appinfo/app.php b/apps/comments/appinfo/app.php
index 00085cf914..df41bdfa32 100644
--- a/apps/comments/appinfo/app.php
+++ b/apps/comments/appinfo/app.php
@@ -32,6 +32,7 @@ $eventDispatcher->addListener(
 		\OCP\Util::addScript('comments', 'commentsummarymodel');
 		\OCP\Util::addScript('comments', 'commentstabview');
 		\OCP\Util::addScript('comments', 'filesplugin');
+		\OCP\Util::addScript('comments', 'activitytabviewplugin');
 		\OCP\Util::addStyle('comments', 'comments');
 	}
 );
diff --git a/apps/comments/css/comments.css b/apps/comments/css/comments.css
index 7f64f1cf7d..103564c5fa 100644
--- a/apps/comments/css/comments.css
+++ b/apps/comments/css/comments.css
@@ -59,35 +59,39 @@
 	line-height: 32px;
 }
 
+#activityTabView li.comment.collapsed .activitymessage,
 #commentsTabView .comment.collapsed .message {
 	white-space: pre-wrap;
 }
 
+#activityTabView li.comment.collapsed .activitymessage,
 #commentsTabView .comment.collapsed .message {
 	max-height: 70px;
 	overflow: hidden;
 }
 
+#activityTabView li.comment .message-overlay,
 #commentsTabView .comment .message-overlay {
 	display: none;
 }
 
+#activityTabView li.comment.collapsed .message-overlay,
 #commentsTabView .comment.collapsed .message-overlay {
 	display: block;
-    position: absolute;
+	position: absolute;
 	z-index: 2;
-    height: 50px;
-    pointer-events: none;
+	height: 50px;
+	pointer-events: none;
 	left: 0;
 	right: 0;
-    bottom: 0;
+	bottom: 0;
 	background: -moz-linear-gradient(rgba(255,255,255,0), rgba(255,255,255,1));
 	background: -webkit-linear-gradient(rgba(255,255,255,0), rgba(255,255,255,1));
 	background: -o-linear-gradient(rgba(255,255,255,0), rgba(255,255,255,1));
 	background: -ms-linear-gradient(rgba(255,255,255,0), rgba(255,255,255,1));
 	background: linear-gradient(rgba(255,255,255,0), rgba(255,255,255,1));
 	filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#00FFFFFF', endColorstr='#FFFFFFFF');
-    background-repeat: no-repeat;
+	background-repeat: no-repeat;
 }
 
 #commentsTabView .authorRow>div {
diff --git a/apps/comments/js/activitytabviewplugin.js b/apps/comments/js/activitytabviewplugin.js
new file mode 100644
index 0000000000..ca3253bd13
Binary files /dev/null and b/apps/comments/js/activitytabviewplugin.js differ
diff --git a/apps/comments/lib/Activity/Extension.php b/apps/comments/lib/Activity/Extension.php
index 8abe42eb9d..6bf7bc9ac0 100644
--- a/apps/comments/lib/Activity/Extension.php
+++ b/apps/comments/lib/Activity/Extension.php
@@ -159,7 +159,7 @@ class Extension implements IExtension {
 				}
 				return (string) $l->t('%1$s commented', $params);
 			case self::ADD_COMMENT_MESSAGE:
-				return $this->convertParameterToComment($params[0], 120);
+				return $this->convertParameterToComment($params[0]);
 		}
 
 		return false;
@@ -196,7 +196,6 @@ class Extension implements IExtension {
 		try {
 			return strip_tags($user) === $this->activityManager->getCurrentUserId();
 		} catch (\UnexpectedValueException $e) {
-			// FIXME this is awkward, but we have no access to the current user in emails
 			return false;
 		}
 	}
@@ -301,21 +300,12 @@ class Extension implements IExtension {
 	 * @param string $parameter
 	 * @return string
 	 */
-	protected function convertParameterToComment($parameter, $maxLength = 0) {
+	protected function convertParameterToComment($parameter) {
 		if (preg_match('/^\<parameter\>(\d*)\<\/parameter\>$/', $parameter, $matches)) {
 			try {
 				$comment = $this->commentsManager->get((int) $matches[1]);
 				$message = $comment->getMessage();
 				$message = str_replace("\n", '<br />', str_replace(['<', '>'], ['&lt;', '&gt;'], $message));
-
-				if ($maxLength && isset($message[$maxLength + 20])) {
-					$findSpace = strpos($message, ' ', $maxLength);
-					if ($findSpace !== false && $findSpace < $maxLength + 20) {
-						return substr($message, 0, $findSpace) . '…';
-					}
-					return substr($message, 0, $maxLength + 20) . '…';
-				}
-
 				return $message;
 			} catch (NotFoundException $e) {
 				return '';