diff --git a/manifest.json b/manifest.json
index 56415f2..e2a6639 100644
--- a/manifest.json
+++ b/manifest.json
@@ -9,12 +9,12 @@
     "version": "20201228~ynh1",
     "url": "https://ethercalc.net/",
     "upstream": {
-        "license": "CPAL-1.0&Artistic-2.0",
+        "license": "CPAL-1.0",
         "website": "https://ethercalc.net/",
         "demo": "https://ethercalc.net/",
         "code": "https://github.com/audreyt/ethercalc"
     },
-    "license": "CPAL-1.0&Artistic-2.0",
+    "license": "CPAL-1.0",
     "maintainer": {
         "name": "ljf",
         "email": "ljf+ethercalc_ynh@reflexlibre.net",