diff --git a/ext/comment/theme.php b/ext/comment/theme.php
index 217fc0bc..3d1e3a1b 100644
--- a/ext/comment/theme.php
+++ b/ext/comment/theme.php
@@ -276,7 +276,7 @@ class CommentListTheme extends Themelet {
 			if(!empty($comment->owner_email)) {
 				$hash = md5(strtolower($comment->owner_email));
 				$cb = date("Y-m-d");
-				$h_avatar = "<img src=\"http://www.gravatar.com/avatar/$hash.jpg?cacheBreak=$cb\"><br>";
+				$h_avatar = "<img src=\"//www.gravatar.com/avatar/$hash.jpg?cacheBreak=$cb\"><br>";
 			}
 			$h_reply = " - <a href='javascript: replyTo($i_image_id, $i_comment_id, \"$h_name\")'>Reply</a>";
 			$h_ip = $user->can("view_ip") ? "<br>".show_ip($comment->poster_ip, "Comment posted {$comment->posted}") : "";
diff --git a/ext/user/main.php b/ext/user/main.php
index 32d31eaa..c5f57d70 100644
--- a/ext/user/main.php
+++ b/ext/user/main.php
@@ -216,7 +216,7 @@ class UserPage extends Extension {
 			($user->id == $event->display_user->id)
 		) {
 			$event->add_stats(
-				"No avatar? This gallery uses <a href='http://gravatar.com'>Gravatar</a> for avatar hosting, use the".
+				"No avatar? This gallery uses <a href='https://gravatar.com'>Gravatar</a> for avatar hosting, use the".
 				"<br>same email address here and there to have your avatar synced<br>",
 				0
 			);