diff --git a/install2.sh b/install2.sh
index 59d3ec5..010c442 100755
--- a/install2.sh
+++ b/install2.sh
@@ -7,11 +7,10 @@ MAIN_TAR_GZ_URL="https://git.artcode.re/miaou/miaou-bash/archive/main.tar.gz"
 ## FUNCTIONS
 
 function upgrade {
-  source_miaou_lib self_upgrade
+  execute_miaou_lib self_upgrade
 }
 
 function install {
-  [[ "$UID" -ne 0 ]] && sudo -vp 'SUDO privilege required: '
 
   MIAOU_BASH_DIR=/opt/miaou-bash
   export MIAOU_BASH_DIR
@@ -19,7 +18,7 @@ function install {
 
   curl -sO $MAIN_TAR_GZ_URL
   sudo tar -xzf main.tar.gz --directory $(dirname "$MIAOU_BASH_DIR")
-  source_miaou_lib initiate
+  execute_miaou_lib initiate
 
   source /etc/profile
   echo "miaou-bash successfully installed"
@@ -41,8 +40,8 @@ function once_installed {
     "$(readlink /etc/inputrc)" == "$MIAOU_BASH_DIR"/etc/inputrc ]]
 }
 
-function source_miaou_lib {
-  . "$MIAOU_BASH_DIR"/bin/miaou-bash "$MIAOU_BASH_DIR/lib/"$1".bash"
+function execute_miaou_lib {
+  sudo -E "$MIAOU_BASH_DIR"/bin/miaou-bash "$MIAOU_BASH_DIR/lib/"$1".bash"
 }
 
 ## MAIN
@@ -51,4 +50,5 @@ function source_miaou_lib {
 
 set -Eeuo pipefail
 assert_supported_distro
+[[ "$UID" -ne 0 ]] && sudo -vp 'SUDO privilege required: '
 once_installed && upgrade || install