diff --git a/backend/Makefile b/backend/Makefile
index 3c92563..1dc7c7b 100644
--- a/backend/Makefile
+++ b/backend/Makefile
@@ -25,7 +25,7 @@ PBF_REGIONI_DIR = $(dir $(PBF_REGIONI))
 OBF_REGIONI = $(subst /pbf/,/obf/,$(PBF_REGIONI))
 OBF_REGIONI_DIR = $(dir $(OBF_REGIONI))
 
-NPM_PREFIX = $(OUTPUT)/npm
+NPM_PREFIX = $(WORK_DIR)/npm
 TOPOJSON_DIR = $(OUTPUT)/topojson
 TOPOJSON = $(TOPOJSON_DIR)/.dirstamp
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 8d56c78..5677039 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,7 +5,8 @@ services:
     #command: anacron -dfn # force run
     restart: always
     volumes:
-    - ./data:/data
+    - ./data/input:/data/input
+    - ./data/output:/data/output
     - ./data/log:/var/log/estratti
   webapp:
     image: ghcr.io/osmitalia/estratti_osm_italia-webapp:main