diff --git a/apps/reader3/3.2.10/docker-compose.yml b/apps/reader3/3.2.10/docker-compose.yml
index 845b89c03..a98ed159f 100644
--- a/apps/reader3/3.2.10/docker-compose.yml
+++ b/apps/reader3/3.2.10/docker-compose.yml
@@ -26,7 +26,6 @@ services:
       - READER_SERVER_PORT=8080
       - READER_SERVER_CONTEXTPATH=${READER_SERVER_CONTEXTPATH:-}
       - READER_APP_USERLIMIT=50
-      - READER_APP_USERBOOKLIMIT=${READER_APP_DEFAULTUSERBOOKSOURCELIMIT}
       - READER_APP_SECURE=true
       - READER_APP_SHELFUPDATEINTEVAL=10
       - READER_APP_REMOTEBOOKSOURCEUPDATEINTERVAL=720