diff --git a/sound/pci/ctxfi/ctdaio.c b/sound/pci/ctxfi/ctdaio.c
index 27441d498968..4cb47b5a792c 100644
--- a/sound/pci/ctxfi/ctdaio.c
+++ b/sound/pci/ctxfi/ctdaio.c
@@ -29,7 +29,7 @@ struct daio_rsc_idx {
 	unsigned short right;
 };
 
-static struct daio_rsc_idx idx_20k1[NUM_DAIOTYP] = {
+static const struct daio_rsc_idx idx_20k1[NUM_DAIOTYP] = {
 	[LINEO1] = {.left = 0x00, .right = 0x01},
 	[LINEO2] = {.left = 0x18, .right = 0x19},
 	[LINEO3] = {.left = 0x08, .right = 0x09},
@@ -40,7 +40,7 @@ static struct daio_rsc_idx idx_20k1[NUM_DAIOTYP] = {
 	[SPDIFI1] = {.left = 0x95, .right = 0x9d},
 };
 
-static struct daio_rsc_idx idx_20k2[NUM_DAIOTYP] = {
+static const struct daio_rsc_idx idx_20k2[NUM_DAIOTYP] = {
 	[LINEO1] = {.left = 0x40, .right = 0x41},
 	[LINEO2] = {.left = 0x60, .right = 0x61},
 	[LINEO3] = {.left = 0x50, .right = 0x51},
diff --git a/sound/pci/ctxfi/ctresource.c b/sound/pci/ctxfi/ctresource.c
index 0bb5696e44b3..61e51e35ba16 100644
--- a/sound/pci/ctxfi/ctresource.c
+++ b/sound/pci/ctxfi/ctresource.c
@@ -92,7 +92,7 @@ int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx)
 	return 0;
 }
 
-static unsigned char offset_in_audio_slot_block[NUM_RSCTYP] = {
+static const unsigned char offset_in_audio_slot_block[NUM_RSCTYP] = {
 	/* SRC channel is at Audio Ring slot 1 every 16 slots. */
 	[SRC]		= 0x1,
 	[AMIXER]	= 0x4,