diff --git a/scripts/_common.sh b/scripts/_common.sh
index f9452d0..0239616 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -22,27 +22,6 @@ COMMIT="bc855b0a1722d2f4ac534ea4d4035299acb7a40a"
 # PERSONAL HELPERS
 #=================================================
 
-# Execute a command as another user with login
-# (hence in user home dir, with prior loading of .profile, etc.)
-# usage: exec_login_as USER COMMAND [ARG ...]
-exec_login_as() {
-    local user=$1
-    shift 1
-    exec_as $user --login "$@"
-}
-# Execute a command as another user
-# usage: exec_as USER COMMAND [ARG ...]
-exec_as() {
-    local user=$1
-    shift 1
-
-    if [[ $user = $(whoami) ]]; then
-        eval "$@"
-    else
-        sudo -u "$user" "$@"
-    fi
-}
-
 #================================================
 # EXPERIMENTAL HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index b99d10b..c139385 100644
--- a/scripts/install
+++ b/scripts/install
@@ -144,12 +144,12 @@ chown -R $app: "$final_path"
 
 pushd "$final_path/live"
     ynh_use_nodejs
-    exec_as $app $ynh_ruby_load_path bin/bundle config set --local path 'vendor/bundle'
-    exec_as $app $ynh_ruby_load_path bin/bundle config set with 'development'
-    exec_as $app $ynh_ruby_load_path bin/bundle install -j$(getconf _NPROCESSORS_ONLN) --quiet
-    exec_as $app env PATH=$ynh_node_load_PATH yarn install --pure-lockfile
-    exec_as $app env PATH=$ynh_node_load_PATH yarn bundle
-    exec_as $app $ynh_ruby_load_path bin/bundle exec rails assets:precompile --quiet
+    ynh_exec_as $app $ynh_ruby_load_path bin/bundle config set --local path 'vendor/bundle'
+    ynh_exec_as $app $ynh_ruby_load_path bin/bundle config set with 'development'
+    ynh_exec_as $app $ynh_ruby_load_path bin/bundle install -j$(getconf _NPROCESSORS_ONLN) --quiet
+    ynh_exec_as $app env PATH=$ynh_node_load_PATH yarn install --pure-lockfile
+    ynh_exec_as $app env PATH=$ynh_node_load_PATH yarn bundle
+    ynh_exec_as $app $ynh_ruby_load_path bin/bundle exec rails assets:precompile --quiet
 popd
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index d865249..41e3409 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -173,12 +173,12 @@ then
 
     pushd "$final_path/live"
         ynh_use_nodejs
-        exec_as $app $ynh_ruby_load_path bin/bundle config set --local path 'vendor/bundle'
-        exec_as $app $ynh_ruby_load_path bin/bundle config set with 'development'
-        exec_as $app $ynh_ruby_load_path bin/bundle install -j$(getconf _NPROCESSORS_ONLN) --quiet
-        exec_as $app env PATH=$ynh_node_load_PATH yarn install --pure-lockfile
-        exec_as $app env PATH=$ynh_node_load_PATH yarn bundle
-        exec_as $app $ynh_ruby_load_path bin/bundle exec rails assets:precompile --quiet
+        ynh_exec_as $app $ynh_ruby_load_path bin/bundle config set --local path 'vendor/bundle'
+        ynh_exec_as $app $ynh_ruby_load_path bin/bundle config set with 'development'
+        ynh_exec_as $app $ynh_ruby_load_path bin/bundle install -j$(getconf _NPROCESSORS_ONLN) --quiet
+        ynh_exec_as $app env PATH=$ynh_node_load_PATH yarn install --pure-lockfile
+        ynh_exec_as $app env PATH=$ynh_node_load_PATH yarn bundle
+        ynh_exec_as $app $ynh_ruby_load_path bin/bundle exec rails assets:precompile --quiet
     popd
 fi