diff --git a/src/drivers/hda-dma.c b/src/drivers/hda-dma.c
index 57cb7fc99..06b2d9c87 100644
--- a/src/drivers/hda-dma.c
+++ b/src/drivers/hda-dma.c
@@ -343,11 +343,11 @@ static int hda_dma_set_config(struct dma *dma, int channel,
 	/* firmware control buffer */
 	dgcs = DGCS_FWCB;
 
-	/* set DGCS.SCS bit to 0 for 32 bit container */
+	/* set DGCS.SCS bit to 1 for 16bit(2B) container */
 	if ((config->direction == DMA_DIR_HMEM_TO_LMEM &&
-	     config->dest_width <= 16) ||
+	     config->dest_width <= 2) ||
 	    (config->direction == DMA_DIR_LMEM_TO_HMEM &&
-	     config->src_width <= 16))
+	     config->src_width <= 2))
 		dgcs |= DGCS_SCS;
 
 	/* init channel in HW */
diff --git a/src/include/reef/dma.h b/src/include/reef/dma.h
index 71bce5647..f82b53364 100644
--- a/src/include/reef/dma.h
+++ b/src/include/reef/dma.h
@@ -68,8 +68,8 @@ struct dma_sg_elem {
 
 /* DMA physical SG params */
 struct dma_sg_config {
-	uint32_t src_width;
-	uint32_t dest_width;
+	uint32_t src_width;	/* in bytes */
+	uint32_t dest_width;	/* in bytes */
 	uint32_t burst_elems;
 	uint32_t direction;
 	uint32_t src_dev;