diff --git a/2.build.postgresql.sh b/2.build.postgresql.sh
index 4da687e..6370de6 100755
--- a/2.build.postgresql.sh
+++ b/2.build.postgresql.sh
@@ -25,4 +25,4 @@ sed -i "s/postgres15-5434/postgres15-$POSTGRESQL_PORT/g" ./docker-compose.yml
 
 docker build \
   -f "$DIR/Dockerfile" \
-  -t "postgres15-$NEW_PORT-image" .
+  -t "postgres15-$POSTGRESQL_PORT-image" .