diff --git a/cpufreq/cpufreq_sanity.sh b/cpufreq/cpufreq_sanity.sh
index e3518b8..24784f9 100755
--- a/cpufreq/cpufreq_sanity.sh
+++ b/cpufreq/cpufreq_sanity.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 # PM-QA validation test suite for the power management on Linux
 #
@@ -23,7 +23,7 @@
 #       - initial API and implementation
 #
 
-source ../include/functions.sh
+. ../include/functions.sh
 
 is_root
 if [ $? -ne 0 ]; then