--- truecrypt/main/unix/main.cpp	2018/04/24 16:49:09	1.1
+++ truecrypt/main/unix/main.cpp	2018/04/24 16:50:33	1.1.1.2
@@ -54,8 +54,14 @@ int main (int argc, char **argv)
 		CoreService::Start();
 		finally_do ({ CoreService::Stop(); });
 
+		bool forceTextUI = false;
+#ifdef __WXGTK__
+		if (!getenv ("DISPLAY"))
+			forceTextUI = true;
+#endif
+
 		// Set user interface type
-		if (argc > 1 && (strcmp (argv[1], "-t") == 0 || strcmp (argv[1], "--text") == 0))
+		if (forceTextUI || (argc > 1 && (strcmp (argv[1], "-t") == 0 || strcmp (argv[1], "--text") == 0)))
 			Application::Initialize (UserInterfaceType::Text);
 		else
 			Application::Initialize (UserInterfaceType::Graphic);