diff --git a/resource/runner/framework/template/setup.sh b/resource/runner/framework/template/setup.sh
index 59c117f..455aa2b 100755
--- a/resource/runner/framework/template/setup.sh
+++ b/resource/runner/framework/template/setup.sh
@@ -5,4 +5,4 @@ git clone --depth=1 https://github.com/MikeMirzayanov/testlib.git >/dev/null 2>&
 rm -rf testlib/.git
 rm -rf testlib/tests
 cd testlib/checkers || exit 1
-parallel clang++ -Ofast -march=native -Wall -pipe -I.. {}.cpp -o {} ::: fcmp hcmp lcmp ncmp nyesno rcmp4 rcmp6 rcmp9 wcmp yesno
+parallel clang++ -O2 -Wall -pipe -I.. {}.cpp -o {} ::: fcmp hcmp lcmp ncmp nyesno rcmp4 rcmp6 rcmp9 wcmp yesno