diff --git a/server.sh b/server.sh
index e1d2f90..c66a4c9 100755
--- a/server.sh
+++ b/server.sh
@@ -8,7 +8,7 @@ cargo build --all --features "metrics_process" --release
 NETWORK=$1
 shift
 
-DB=./db
+DB=${DB-./db}
 export RUST_LOG=${RUST_LOG-electrs=INFO}
 target/release/electrs --network $NETWORK --db-dir $DB --daemon-dir $HOME/.bitcoin $*