diff --git a/src/Translation.cpp b/src/Translation.cpp
index 1f1748b9..153f097a 100644
--- a/src/Translation.cpp
+++ b/src/Translation.cpp
@@ -16,6 +16,7 @@
 
 #include <znc/Translation.h>
 #include <znc/FileUtils.h>
+#include <znc/znc.h>
 
 #ifdef HAVE_I18N
 #include <boost/locale.hpp>
@@ -88,6 +89,7 @@ const std::locale& CTranslation::LoadTranslation(const CString& sDomain) {
     if (lang_it == domain.end()) {
         boost::locale::generator gen;
         gen.add_messages_path(LOCALE_DIR);
+        gen.add_messages_path(CZNC::Get().GetModPath() + "/locale");
         gen.add_messages_domain(sDomain);
         std::tie(lang_it, std::ignore) =
             domain.emplace(sLanguage, gen(sLanguage + ".UTF-8"));
diff --git a/test/integration/framework/znctest.cpp b/test/integration/framework/znctest.cpp
index 2c4d6d21..58c3f926 100644
--- a/test/integration/framework/znctest.cpp
+++ b/test/integration/framework/znctest.cpp
@@ -171,4 +171,30 @@ void ZNCTest::InstallModule(QString name, QString content) {
     }
 }
 
+void ZNCTest::InstallTranslation(QString module, QString language, QString content) {
+    QDir dir(m_dir.path());
+    for (QString d : std::vector<QString>{"modules", "locale", language, "LC_MESSAGES"}) {
+        ASSERT_TRUE(dir.mkpath(d)) << d.toStdString();
+        ASSERT_TRUE(dir.cd(d)) << d.toStdString();
+    }
+    QTemporaryDir srcdir;
+    QFile file(QDir(srcdir.path()).filePath("foo.po"));
+    ASSERT_TRUE(file.open(QIODevice::WriteOnly | QIODevice::Text));
+    QTextStream out(&file);
+    out << content;
+    file.close();
+    {
+        Process p("msgfmt", QStringList() << "-D" << "." << "-o" << "foo.mo" << "foo.po",
+            [&](QProcess* proc) {
+                proc->setWorkingDirectory(srcdir.path());
+                proc->setProcessChannelMode(QProcess::ForwardedChannels);
+            });
+        p.ShouldFinishItself();
+        p.ShouldFinishInSec(300);
+    }
+    QFile result(QDir(srcdir.path()).filePath("foo.mo"));
+    result.rename(dir.filePath("znc-" + module + ".mo"));
+}
+
+
 }  // namespace znc_inttest
diff --git a/test/integration/framework/znctest.h b/test/integration/framework/znctest.h
index fd439ea0..c03591ef 100644
--- a/test/integration/framework/znctest.h
+++ b/test/integration/framework/znctest.h
@@ -47,6 +47,7 @@ class ZNCTest : public testing::Test {
     std::unique_ptr<QNetworkReply> HandleHttp(QNetworkReply* reply);
 
     void InstallModule(QString name, QString content);
+    void InstallTranslation(QString module, QString language, QString content);
 
     App m_app;
     QNetworkAccessManager m_network;
diff --git a/test/integration/tests/scripting.cpp b/test/integration/tests/scripting.cpp
index 7ee61821..06bf5e0c 100644
--- a/test/integration/tests/scripting.cpp
+++ b/test/integration/tests/scripting.cpp
@@ -316,19 +316,45 @@ TEST_F(ZNCTest, ModpythonCommand) {
 
         class testcmd(znc.Command):
             command = 'ping'
+            args = cmdtest.t_d('ar')
             description = cmdtest.t_d('blah')
 
             def __call__(self, line):
-                self.GetModule().PutModule('pong')
+                self.GetModule().PutModule(line + cmdtest.t_s(' pong'))
     )");
 
     auto ircd = ConnectIRCd();
     auto client = LoginClient();
     client.Write("znc loadmod modpython");
     client.Write("znc loadmod cmdtest");
+    client.Write("PRIVMSG *cmdtest :ping or");
+    client.ReadUntil(":*cmdtest!znc@znc.in PRIVMSG nick :ping or pong");
+
+    InstallTranslation("cmdtest", "ru_RU", R"(
+        msgid ""
+        msgstr ""
+        "Content-Type: text/plain; charset=UTF-8\n"
+        "Content-Transfer-Encoding: 8bit\n"
+        "Plural-Forms: nplurals=4; plural=((n%10==1 && n%100!=11) ? 0 : ((n%10 >= 2 "
+        "&& n%10 <=4 && (n%100 < 12 || n%100 > 14)) ? 1 : ((n%10 == 0 || (n%10 >= 5 "
+        "&& n%10 <=9)) || (n%100 >= 11 && n%100 <= 14)) ? 2 : 3));\n"
+        "Language: ru_RU\n"
+
+        msgid "ar"
+        msgstr "аргумент"
+
+        msgid "blah"
+        msgstr "бла"
+
+        msgid " pong"
+        msgstr " понг"
+    )");
+
+    client.Write("PRIVMSG *controlpanel :set language $me ru-RU");
     client.Write("PRIVMSG *cmdtest :help");
+    client.ReadUntil(":*cmdtest!znc@znc.in PRIVMSG nick :\x02ping аргумент\x0F: бла");
     client.Write("PRIVMSG *cmdtest :ping");
-    client.ReadUntil(":*cmdtest!znc@znc.in PRIVMSG nick :pong");
+    client.ReadUntil(":*cmdtest!znc@znc.in PRIVMSG nick :ping понг");
 }
 
 }  // namespace