diff --git a/docker/backend/start.sh b/docker/backend/start.sh
index d758290f7..ed3aa1524 100644
--- a/docker/backend/start.sh
+++ b/docker/backend/start.sh
@@ -2,7 +2,7 @@
 
 #MEMPOOL
 __MEMPOOL_BACKEND_MAINNET_HTTP_PORT__=${BACKEND_MAINNET_HTTP_PORT:=8999}
-__MEMPOOL_BACKEND_MAINNET_CACHE_DIR__=${CACHE_DIR:=./cache}
+__MEMPOOL_BACKEND_MAINNET_CACHE_DIR__=${CACHE_DIR:=./}
 # BITCOIN
 __BITCOIN_MAINNET_RPC_HOST__=${RPC_HOST:=127.0.0.1}
 __BITCOIN_MAINNET_RPC_PORT__=${RPC_PORT:=8332}