diff --git a/src/lang.js b/src/lang.js
index 781de3d..7f9b167 100644
--- a/src/lang.js
+++ b/src/lang.js
@@ -294,7 +294,7 @@
             subKey = '';
             while (entries.length && message !== undefined) {
                 var subKey = !subKey ? entries.shift() : subKey.concat('.', entries.shift());
-                if (message[subKey]) {
+                if (message[subKey] !== undefined) {
                     message = message[subKey]
                     subKey = '';
                 }