diff --git a/src/canvas.cpp b/src/canvas.cpp
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -954,6 +954,7 @@ void Main::gpl()
       QMessageBox::Information, 1, 0, 0, this, 0, FALSE );
 
   QDir docDir(QApplication::applicationDirPath());
+  docDir.cd("../doc");
   QString path = docDir.filePath("gpl3.txt");
 
   std::ifstream file(path.toStdString().c_str());