diff --git a/conf/systemd.service b/conf/systemd.service
index 9f40fd9..79f170c 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -9,7 +9,7 @@ Group=__APP__
 WorkingDirectory=__FINALPATH__/
 Environment="NODE_ENV=production"
 #Environment="__YNH_NODE_LOAD_PATH__"
-ExecStart=__YNH_NODE__ __FINALPATH__/server/bin/prod.js
+ExecStart=__FINALPATH__/server/bin/prod.js
 Restart=always
 
 # Sandboxing options to harden security
diff --git a/scripts/install b/scripts/install
index d791c7b..481c670 100644
--- a/scripts/install
+++ b/scripts/install
@@ -125,10 +125,16 @@ chown $app "$final_path/server/config.js"
 #==============================================
 ynh_script_progression --message="Building $app... (this will take some time and resources!)" --weight=20
 
+#pushd "$final_path"
+#	ynh_use_nodejs
+#	ynh_exec_warn_less ynh_npm install
+#	ynh_exec_warn_less ynh_npm run build
+#popd
+
 pushd "$final_path"
 	ynh_use_nodejs
-	ynh_exec_warn_less ynh_npm install
-	ynh_exec_warn_less ynh_npm run build
+	ynh_exec_warn_less ynh_exec_as $app env "$ynh_node_load_PATH" npm install
+	ynh_exec_warn_less ynh_exec_as $app env "$ynh_node_load_PATH" npm run build
 popd
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index bcf15ec..977ed44 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -118,11 +118,16 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Building $app... (this will take some time and resources!)" --weight=16
 
+	#pushd "$final_path"
+	#	ynh_use_nodejs
+	#	ynh_exec_warn_less ynh_npm install
+	#	ynh_exec_warn_less ynh_npm run build
+	#popd
 	pushd "$final_path"
-		ynh_use_nodejs
-		ynh_exec_warn_less ynh_npm install
-		ynh_exec_warn_less ynh_npm run build
-	popd
+	ynh_use_nodejs
+	ynh_exec_warn_less ynh_exec_as $app env "$ynh_node_load_PATH" npm install
+	ynh_exec_warn_less ynh_exec_as $app env "$ynh_node_load_PATH" npm run build
+popd
 fi
 
 #=================================================