diff --git a/src/hexen/mn_menu.c b/src/hexen/mn_menu.c
index d85da830..a2e2ef92 100644
--- a/src/hexen/mn_menu.c
+++ b/src/hexen/mn_menu.c
@@ -294,7 +294,7 @@ static Menu_t *Menus[] = {
     &SaveMenu
 };
 
-static char *GammaText[] = {
+static const char *GammaText[] = {
     TXT_GAMMA_LEVEL_OFF,
     TXT_GAMMA_LEVEL_1,
     TXT_GAMMA_LEVEL_2,