diff --git a/sound/pci/ctxfi/cthw20k1.c b/sound/pci/ctxfi/cthw20k1.c
index 79edd88d5cd08398afb86c63b3d32b025162164e..8e6eb9d7984b88329d8ea291cf2414f299f9a819 100644
--- a/sound/pci/ctxfi/cthw20k1.c
+++ b/sound/pci/ctxfi/cthw20k1.c
@@ -2154,7 +2154,7 @@ static void hw_write_pci(struct hw *hw, u32 reg, u32 data)
 		&container_of(hw, struct hw20k1, hw)->reg_pci_lock, flags);
 }
 
-static struct hw ct20k1_preset = {
+static const struct hw ct20k1_preset = {
 	.irq = -1,
 
 	.card_init = hw_card_init,
diff --git a/sound/pci/ctxfi/cthw20k2.c b/sound/pci/ctxfi/cthw20k2.c
index 18ee7768b7c4021b3d1f9b5a8f748a68521ee938..b866d6b2c9236d440d742cfac2ba652a7d2ab333 100644
--- a/sound/pci/ctxfi/cthw20k2.c
+++ b/sound/pci/ctxfi/cthw20k2.c
@@ -2220,7 +2220,7 @@ static void hw_write_20kx(struct hw *hw, u32 reg, u32 data)
 	writel(data, hw->mem_base + reg);
 }
 
-static struct hw ct20k2_preset = {
+static const struct hw ct20k2_preset = {
 	.irq = -1,
 
 	.card_init = hw_card_init,