diff --git a/btrfs.c b/btrfs.c
index 1f771770..bd11cb09 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -1216,7 +1216,7 @@ MPERS_PRINTER_DECL(int, btrfs_ioctl,
 			tprints("...");
 		else {
 			uint64_t record;
-			print_array(tcp, (unsigned long) args.clone_sources,
+			print_array(tcp, (kernel_ureg_t) args.clone_sources,
 				    args.clone_sources_count,
 				    &record, sizeof(record),
 				    umoven_or_printaddr,
@@ -1320,7 +1320,7 @@ MPERS_PRINTER_DECL(int, btrfs_ioctl,
 					(uint64_t) args.size);
 
 				btrfs_print_qgroup_inherit(tcp,
-					(unsigned long) args.qgroup_inherit);
+					(kernel_ureg_t) args.qgroup_inherit);
 			}
 			tprints(", name=");
 			print_quoted_string(args.name, sizeof(args.name),