diff --git a/package-lock.json b/package-lock.json
index 249f0fc..b44edc6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -26,6 +26,9 @@
         "@babel/preset-env": "^7.6.2",
         "@babel/register": "^7.9.0",
         "mocha": "^7.1.1"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/rsimon"
       }
     },
     "node_modules/@babel/code-frame": {
diff --git a/package.json b/package.json
index 27603a1..cd82cd9 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "url": "https://github.com/recogito/recogito-client-core/issues"
   },
   "homepage": "https://github.com/recogito/recogito-client-core/wiki",
+  "funding": "https://github.com/sponsors/rsimon",
   "devDependencies": {
     "@babel/core": "^7.6.2",
     "@babel/plugin-proposal-class-properties": "^7.5.5",
diff --git a/src/i18n/index.js b/src/i18n/index.js
index ecf8bf6..483db64 100644
--- a/src/i18n/index.js
+++ b/src/i18n/index.js
@@ -86,16 +86,13 @@ timeago.register('tr', tr);
 
 /**
  * Helper function that allows plugins to register their
- * own I18N labels
+ * own additional I18N labels
  */
-i18n.registerMessages = dict => {
-  const currentLocale = i18n.locale();
-  const messages = dict[currentLocale];
-
-  if (messages)
-    i18n.extend(messages);  
+i18n.registerMessages = (lang, messages) => {
+  if (MESSAGES[lang])
+    MESSAGES[lang] = {...MESSAGES[lang], ...messages };
   else
-    console.warn(`Locale ${currentLocale} not supported by plugin widget - falling back to defaults`);
+    MESSAGES[lang] = messages;
 }
 
 export default i18n;