diff --git a/src/setup/mainmenu.c b/src/setup/mainmenu.c
index 62206b39..03116f62 100644
--- a/src/setup/mainmenu.c
+++ b/src/setup/mainmenu.c
@@ -181,7 +181,7 @@ static void LaunchDoom(void *unused1, void *unused2)
 
 static txt_button_t *GetLaunchButton(void)
 {
-    char *label;
+    const char *label;
 
     switch (gamemission)
     {