diff --git a/ext/comment/main.php b/ext/comment/main.php
index 6f082a76..c71ebc2a 100644
--- a/ext/comment/main.php
+++ b/ext/comment/main.php
@@ -146,7 +146,18 @@ class CommentList extends SimpleExtension {
 				}
 			}
 			else if($event->get_arg(0) == "list") {
-				$this->build_page($event->get_arg(1));
+				$page_num = int_escape($event->get_arg(1));
+				if($page_num <= 5) {
+					$this->build_page($page_num);
+				}
+				else {
+					header("HTTP/1.0 403 Blocked");
+					$this->theme->display_error($page,
+					"This page is history~",
+					"Only the first 5 pages of comments are visible ".
+					"- 99% of the traffic to older pages was bots, and ".
+					"they were hammering the database o.o");
+				}
 			}
 		}
 	}