diff --git a/modoboa/locale/zh/LC_MESSAGES/django.po b/modoboa/locale/zh/LC_MESSAGES/django.po
index 5e92e4710..6e6229384 100644
--- a/modoboa/locale/zh/LC_MESSAGES/django.po
+++ b/modoboa/locale/zh/LC_MESSAGES/django.po
@@ -16,7 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
 
 #: admin/api/v1/serializers.py:39
 msgid ""