diff --git a/inc/python b/inc/python
index fd0d616..fe7bba6 100644
--- a/inc/python
+++ b/inc/python
@@ -38,7 +38,8 @@
 # Get the path to the direcotry where python executables are installed.
 # get_python_exec_prefix
 function get_python_exec_prefix {
-    local xtrace=$(set +o | grep xtrace)
+    local xtrace
+    xtrace=$(set +o | grep xtrace)
     set +o xtrace
     if [[ -z "$os_PACKAGE" ]]; then
         GetOSVersion
@@ -69,7 +70,8 @@
 # ``PIP_UPGRADE``, ``TRACK_DEPENDS``, ``*_proxy``,
 # pip_install package [package ...]
 function pip_install {
-    local xtrace=$(set +o | grep xtrace)
+    local xtrace
+    xtrace=$(set +o | grep xtrace)
     set +o xtrace
     local upgrade=""
     local offline=${OFFLINE:-False}