diff --git a/manifest.json b/manifest.json
index 462506c..b88c2b1 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Distributed pastebin with ActivityPub.",
         "fr": "Pastebin distribué utilisant le protocole ActivityPub."
     },
-    "version": "1.2.0~ynh2",
+    "version": "1.2.0~ynh3",
     "url": "https://example.com",
     "license": "Apache-2.0",
     "maintainer": {
diff --git a/scripts/upgrade b/scripts/upgrade
index d88779f..b48c5a2 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -146,9 +146,16 @@ popd
 
 cp "../conf/.env" "$final_path/.env"
 
+if [ "$path_url" == "/" ]
+then
+    domain_uri="$domain"
+else
+    domain_uri="$domain$path_url"
+fi
+
 ynh_replace_string "__NODEJS_PATH__" "$nodejs_path" "$final_path/.env"
 ynh_replace_string "__PORT__" "$port" "$final_path/.env"
-ynh_replace_string "__DOMAIN_URI__" "$domain$path_url" "$final_path/.env"
+ynh_replace_string "__DOMAIN_URI__" "$domain_uri" "$final_path/.env"
 ynh_replace_string "__FINALPATH__" "$final_path" "$final_path/.env"
 
 ### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.