diff --git a/scripts/change_url b/scripts/change_url
index 1986103..89fee3d 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -103,7 +103,15 @@ ynh_systemd_action --action=stop --service_name=$app
 #=================================================
 
 # Change the URL in the configuration file
-ynh_replace_string "EXTERNAL_URL=.*" "EXTERNAL_URL=https://$new_domain$new_path" "$final_path/.env"
+
+if [ "$new_path" = "/" ]
+then
+    new_domain_uri="$domain$path_url"
+else
+    new_domain_uri="$domain"
+fi
+
+ynh_replace_string "EXTERNAL_URL=.*" "EXTERNAL_URL=https://$new_domain_uri/" "$final_path/.env"
 
 ### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
 ### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
@@ -117,7 +125,6 @@ ynh_store_file_checksum "$final_path/.env"
 
 ynh_systemd_action --action=start --service_name=$app
 
-
 #=================================================
 # GENERIC FINALISATION
 #=================================================
diff --git a/scripts/install b/scripts/install
index f45cc25..e5210b7 100644
--- a/scripts/install
+++ b/scripts/install
@@ -196,10 +196,16 @@ ynh_add_systemd_config
 ### (It's compatible with sed regular expressions syntax)
 
 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"
 
 #=================================================