diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index 7458b416c2..3b3b40fa73 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -1775,8 +1775,9 @@ zio_write_compress(zio_t *zio)
 			compress = ZIO_COMPRESS_OFF;
 
 		/* Make sure someone doesn't change their mind on overwrites */
-		ASSERT(BP_IS_EMBEDDED(bp) || MIN(zp->zp_copies + BP_IS_GANG(bp),
-		    spa_max_replication(spa)) == BP_GET_NDVAS(bp));
+		ASSERT(BP_IS_EMBEDDED(bp) || BP_IS_GANG(bp) ||
+		    MIN(zp->zp_copies, spa_max_replication(spa))
+		    == BP_GET_NDVAS(bp));
 	}
 
 	/* If it's a compressed write that is not raw, compress the buffer. */