* Fix an illegal cast of a static string to a char* (has to be char const*).
diff --git a/demo/FTGLDemo.cpp b/demo/FTGLDemo.cpp
index 908366f..a993b4c 100644
--- a/demo/FTGLDemo.cpp
+++ b/demo/FTGLDemo.cpp
@@ -40,7 +40,7 @@
#define FTGL_EXTRUDE 4
#define FTGL_TEXTURE 5
-char* fontfile = FONT_FILE;
+char const* fontfile = FONT_FILE;
int current_font = FTGL_EXTRUDE;
GLint w_win = 640, h_win = 480;