diff --git a/README.md b/README.md
index b188237..0bf844d 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,9 @@ Step 3 S3 download uses CDSE OpenEO (`SENTINEL3_SYN_L2_SYN`). Set `CDSE_USER` an
 
 ## Web viewer
 
-`make serve` (from the workspace root) serves `processing/` at [http://localhost:8000/index.html](http://localhost:8000/index.html). Requires step 5 output (`data/metrics/manifest.json`).
+
+
+`python3 -m http.server 8080` the webapp on [http://localhost:8000/index.html](http://localhost:8000/index.html). Requires step 5 output (`data/metrics/manifest.json`).
 
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