diff --git a/drivers/ufs/ufs.c b/drivers/ufs/ufs.c
index d8c0a14..cf3f0e6 100644
--- a/drivers/ufs/ufs.c
+++ b/drivers/ufs/ufs.c
@@ -225,7 +225,7 @@
 			}
 			continue;
 		}
-		assert((mmio_read_32(base + HCS) & HCS_DP) == 0);
+		assert(mmio_read_32(base + HCS) & HCS_DP);
 		data = mmio_read_32(base + IS);
 		if (data & UFS_INT_ULSS)
 			mmio_write_32(base + IS, UFS_INT_ULSS);