diff --git a/src/Worker/OptimizeTables.php b/src/Worker/OptimizeTables.php
index b6343e6cf..9a49e4256 100644
--- a/src/Worker/OptimizeTables.php
+++ b/src/Worker/OptimizeTables.php
@@ -57,6 +57,7 @@ class OptimizeTables
 		DBA::e("OPTIMIZE TABLE `notify`");
 		DBA::e("OPTIMIZE TABLE `oembed`");
 		DBA::e("OPTIMIZE TABLE `parsed_url`");
+		DBA::e("OPTIMIZE TABLE `session`");
 		DBA::e("OPTIMIZE TABLE `photo`");
 		DBA::e("OPTIMIZE TABLE `post`");
 		DBA::e("OPTIMIZE TABLE `post-content`");