diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index 17cc44f14e5c..b5fd15e0c050 100644
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -434,7 +434,7 @@ static int img_hash_write_via_dma_stop(struct img_hash_dev *hdev)
 	struct img_hash_request_ctx *ctx = ahash_request_ctx(hdev->req);
 
 	if (ctx->flags & DRIVER_FLAGS_SG)
-		dma_unmap_sg(hdev->dev, ctx->sg, ctx->dma_ct, DMA_TO_DEVICE);
+		dma_unmap_sg(hdev->dev, ctx->sg, 1, DMA_TO_DEVICE);
 
 	return 0;
 }