diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index c3a9ee2..7b4a886 100644
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -16,7 +16,7 @@
 if is_service_enabled freezer-web-ui; then
     if [[ "$1" == "source" || "`type -t install_freezer_web_ui`" != 'function' ]]; then
         # Initial source
-        source $FREEZER_WEB_UI_DIR/devstack/lib/freezer-web-ui
+        . $FREEZER_WEB_UI_DIR/devstack/lib/freezer-web-ui
     fi
 
     if [[ "$1" == "stack" && "$2" == "install" ]]; then
diff --git a/tools/with_venv.sh b/tools/with_venv.sh
index b15965f..99c1d35 100755
--- a/tools/with_venv.sh
+++ b/tools/with_venv.sh
@@ -4,4 +4,4 @@ VENV_PATH=${VENV_PATH:-${TOOLS_PATH}}
 VENV_DIR=${VENV_NAME:-/../.venv}
 TOOLS=${TOOLS_PATH}
 VENV=${VENV:-${VENV_PATH}/${VENV_DIR}}
-source ${VENV}/bin/activate && "$@"
\ No newline at end of file
+. ${VENV}/bin/activate && "$@"