diff --git a/sys/ddb/db_access.c b/sys/ddb/db_access.c
--- a/sys/ddb/db_access.c
+++ b/sys/ddb/db_access.c
@@ -55,7 +55,7 @@
 db_expr_t
 db_get_value(db_addr_t addr, int size, bool is_signed)
 {
-	char		data[sizeof(u_int64_t)];
+	char		data[sizeof(uint64_t)];
 	db_expr_t	value;
 	int		i;