diff --git a/cpufreq/cpufreq_03.sh b/cpufreq/cpufreq_03.sh
index acd1c2a..32e2114 100755
--- a/cpufreq/cpufreq_03.sh
+++ b/cpufreq/cpufreq_03.sh
@@ -29,12 +29,12 @@
 
 check_governor() {
 
-    local cpu=$1
-    local newgov=$2
+    cpu=$1
+    newgov=$2
 
     shift 2
 
-    local oldgov=$(get_governor $cpu)
+    oldgov=$(get_governor $cpu)
 
     set_governor $cpu $newgov
 
diff --git a/cpufreq/cpufreq_04.sh b/cpufreq/cpufreq_04.sh
index 98b0fa1..6813a2a 100755
--- a/cpufreq/cpufreq_04.sh
+++ b/cpufreq/cpufreq_04.sh
@@ -29,13 +29,13 @@
 
 check_frequency() {
 
-    local cpu=$1
-    local newfreq=$2
+    cpu=$1
+    newfreq=$2
 
     shift 2
 
-    local oldgov=$(get_governor $cpu)
-    local oldfreq=$(get_frequency $cpu)
+    oldgov=$(get_governor $cpu)
+    oldfreq=$(get_frequency $cpu)
 
     set_governor $cpu userspace
     set_frequency $cpu $newfreq
diff --git a/cpufreq/cpufreq_05.sh b/cpufreq/cpufreq_05.sh
index f74a23e..862d310 100755
--- a/cpufreq/cpufreq_05.sh
+++ b/cpufreq/cpufreq_05.sh
@@ -32,23 +32,23 @@
 trap restore_governors HUP INT TERM
 
 switch_ondemand() {
-    local cpu=$1
+    cpu=$1
     set_governor $cpu 'ondemand'
 }
 
 switch_conservative() {
-    local cpu=$1
+    cpu=$1
     set_governor $cpu 'conservative'
 }
 
 switch_userspace() {
-    local cpu=$1
+    cpu=$1
     set_governor $cpu 'userspace'
 }
 
 check_governor() {
-    local cpu=$1
-    local gov=$2
+    cpu=$1
+    gov=$2
 
     if [ -d $CPU_PATH/$cpu/cpufreq/$gov ]; then
         GOV_PATH=$CPU_PATH/$cpu/cpufreq/$gov
diff --git a/cpufreq/cpufreq_06.sh b/cpufreq/cpufreq_06.sh
index 803b937..a6fbd15 100755
--- a/cpufreq/cpufreq_06.sh
+++ b/cpufreq/cpufreq_06.sh
@@ -31,8 +31,8 @@
 
 compute_freq_ratio() {
 
-    local cpu=$1
-    local freq=$2
+    cpu=$1
+    freq=$2
 
     set_frequency $cpu $freq
 
@@ -75,8 +75,8 @@
 
 check_freq_deviation() {
 
-    local cpu=$1
-    local freq=$2
+    cpu=$1
+    freq=$2
 
     check "deviation for frequency $(frequnit $freq)" __check_freq_deviation
 
@@ -84,7 +84,7 @@
 
 check_deviation() {
 
-    local cpu=$1
+    cpu=$1
 
     set_governor $cpu userspace
 
diff --git a/cpufreq/cpufreq_07.sh b/cpufreq/cpufreq_07.sh
index 9f41c49..f5c9e2b 100755
--- a/cpufreq/cpufreq_07.sh
+++ b/cpufreq/cpufreq_07.sh
@@ -31,11 +31,10 @@
 
 check_ondemand() {
 
-    local cpu=$1
-    local maxfreq=$(get_max_frequency $cpu)
-    local minfreq=$(get_min_frequency $cpu)
-    local curfreq=$(get_frequency $cpu)
-    local pid=
+    cpu=$1
+    maxfreq=$(get_max_frequency $cpu)
+    minfreq=$(get_min_frequency $cpu)
+    curfreq=$(get_frequency $cpu)
 
     set_governor $cpu ondemand
 
diff --git a/cpufreq/cpufreq_08.sh b/cpufreq/cpufreq_08.sh
index 29b2b9f..f81976d 100755
--- a/cpufreq/cpufreq_08.sh
+++ b/cpufreq/cpufreq_08.sh
@@ -30,10 +30,8 @@
 CPUBURN=../utils/cpuburn
 
 check_frequency() {
-    local cpu=$1
-    local freq=$2
-    local curfreq=
-    local pid=
+    cpu=$1
+    freq=$2
 
     $CPUBURN $cpu &
     pid=$!
@@ -54,10 +52,10 @@
 
 check_userspace() {
 
-    local cpu=$1
-    local maxfreq=$(get_max_frequency $cpu)
-    local minfreq=$(get_min_frequency $cpu)
-    local curfreq=$(get_frequency $cpu)
+    cpu=$1
+    maxfreq=$(get_max_frequency $cpu)
+    minfreq=$(get_min_frequency $cpu)
+    curfreq=$(get_frequency $cpu)
 
     set_governor $cpu userspace
 
diff --git a/cpufreq/cpufreq_09.sh b/cpufreq/cpufreq_09.sh
index 746c7de..2ba1652 100755
--- a/cpufreq/cpufreq_09.sh
+++ b/cpufreq/cpufreq_09.sh
@@ -31,9 +31,9 @@
 
 check_powersave() {
 
-    local cpu=$1
-    local minfreq=$(get_min_frequency $cpu)
-    local curfreq=$(get_frequency $cpu)
+    cpu=$1
+    minfreq=$(get_min_frequency $cpu)
+    curfreq=$(get_frequency $cpu)
 
     set_governor $cpu powersave
 
diff --git a/cpufreq/cpufreq_sanity.sh b/cpufreq/cpufreq_sanity.sh
index 24784f9..6aba317 100755
--- a/cpufreq/cpufreq_sanity.sh
+++ b/cpufreq/cpufreq_sanity.sh
@@ -33,7 +33,7 @@
 
 check_cpufreq_sysfs_entry() {
 
-    local dirpath=$CPU_PATH/cpufreq
+    dirpath=$CPU_PATH/cpufreq
 
     test -d $dirpath
     if [ $? -ne 0 ]; then