diff --git a/auto.sh b/auto.sh
index e2d0e3e..38dd599 100755
--- a/auto.sh
+++ b/auto.sh
@@ -37,8 +37,6 @@ if [ ! -d "lib/ngx_pagespeed/psol" ]; then
     cd ../../
 fi
 
-# not use -flto settings.
-
 auto/configure \
 --with-cc-opt='-DTCP_FASTOPEN=23 -m64 -flto -g -O3 -march=native -fstack-protector-strong -fuse-ld=gold -fuse-linker-plugin --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wno-strict-aliasing -Wp,-D_FORTIFY_SOURCE=2 -gsplit-dwarf -DNGX_HTTP_HEADERS' \
 --with-ld-opt='-ljemalloc -Wl,-z,relro' \