diff --git a/techpack/audio/asoc/codecs/fs1815/fsm_core.c b/techpack/audio/asoc/codecs/fs1815/fsm_core.c
index 62579b3df4f2..dcec1986ef69 100644
--- a/techpack/audio/asoc/codecs/fs1815/fsm_core.c
+++ b/techpack/audio/asoc/codecs/fs1815/fsm_core.c
@@ -1003,7 +1003,6 @@ int fsm_parse_preset(const void *data, uint32_t size)
 int fsm_swap_channel(fsm_dev_t *fsm_dev, int next_angle)
 {
 	uint16_t left_chn;
-	uint8_t i2sctrl;
 	uint16_t chs12;
 	int ret = 0;
 
@@ -1036,10 +1035,8 @@ int fsm_swap_channel(fsm_dev_t *fsm_dev, int next_angle)
 		chs12 = 3;
 	}
 	if (fsm_dev->is1958) {
-		i2sctrl = 0x17;
 		ret = fsm_set_bf(fsm_dev, 0x1317, chs12); // 0x17[4..3]
 	} else {
-		i2sctrl = 0x04;
 		ret = fsm_set_bf(fsm_dev, 0x1304, chs12); // 0x04[4..3]
 	}
 	pr_addr(debug, "pos:%02X, CHS12:%d", fsm_dev->pos_mask, chs12);