diff --git a/data/resources/font.txt b/data/resources/font.fdf
similarity index 100%
rename from data/resources/font.txt
rename to data/resources/font.fdf
diff --git a/font_generator/engine.cpp b/font_generator/engine.cpp
index 2be26147cf..6a73e09c6d 100644
--- a/font_generator/engine.cpp
+++ b/font_generator/engine.cpp
@@ -419,7 +419,7 @@ void Engine::RunExport()
   MyThread * thread = static_cast<MyThread *>(m_workThread);
   QList<MyThread::GlyphInfo> const & infos = thread->GetInfos();
 
-  QFile file(m_dirName.trimmed() + "/font.txt");
+  QFile file(m_dirName.trimmed() + "/font.fdf");
   if (!file.open(QIODevice::WriteOnly))
     throw -1;