diff --git a/install_orbit_environment.sh b/install_orbit_environment.sh
index 4be33c0..c4558ba 100644
--- a/install_orbit_environment.sh
+++ b/install_orbit_environment.sh
@@ -302,7 +302,7 @@ fi
 if [[ "$ubuntu_version" =~ '14' ]]; then
 	install_mongodb "3.2"
 else
-	if [ -z "$(lscpu |grep 'avx')" ]; then #Latest version not use avx instruction is 4.4.
+	if [ -z "$(lscpu |grep -w 'avx')" ]; then #Latest version not use avx instruction is 4.4.
 		install_mongodb "4.4"
 	else
 		install_mongodb "6.0"