diff --git a/lego_wrapper.sh b/lego_wrapper.sh
index 1a14be5..170088f 100644
--- a/lego_wrapper.sh
+++ b/lego_wrapper.sh
@@ -220,14 +220,14 @@ get_system_information() {
 
 get_os_type() {
   #get OSTYPE - modify to know defualt package name to use for installation
-  os_type=$(awk -F'=' '/ID_LIKE/ {print $2}' /etc/os-release | awk -F'"' '{print $2}')
+  os_type=$(awk -F'=' '/^ID/ {print $2}' /etc/os-release')
   if [[ $os_type == *"debian"* ]]; then
     install_cmd="apt"
   elif [[ $os_type == *"ubuntu"* ]]; then
     install_cmd="apt"
   elif [[ $os_type == *"almalinux"* ]]; then
     install_cmd="yum"
-  elif [[ $os_type == *"redhat"* ]]; then
+  elif [[ $os_type == *"rhel"* ]]; then
     install_cmd="yum"
   elif [[ $os_type == *"centos"* ]]; then
     install_cmd="yum"