diff --git a/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst b/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst
index 11cc07d..4850e54 100644
--- a/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst
+++ b/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst
@@ -8,7 +8,7 @@ run
 -p xc4vsx35-10-ff668
 -top mips_sys
 -opt_mode Speed
--opt_level 1
+-opt_level 2
 -power NO
 -iuc NO
 -lso ./project/mips_sys.lso