diff --git a/lib/neutron_plugins/embrane b/lib/neutron_plugins/embrane
index 6b4819e..2028496 100644
--- a/lib/neutron_plugins/embrane
+++ b/lib/neutron_plugins/embrane
@@ -10,7 +10,8 @@
 source $TOP_DIR/lib/neutron_plugins/openvswitch
 
 function save_function {
-    local ORIG_FUNC=$(declare -f $1)
+    local ORIG_FUNC
+    ORIG_FUNC=$(declare -f $1)
     local NEW_FUNC="$2${ORIG_FUNC#$1}"
     eval "$NEW_FUNC"
 }
diff --git a/lib/neutron_plugins/ovs_base b/lib/neutron_plugins/ovs_base
index b012683..d3fd198 100644
--- a/lib/neutron_plugins/ovs_base
+++ b/lib/neutron_plugins/ovs_base
@@ -49,8 +49,10 @@
 
 function _neutron_ovs_base_install_ubuntu_dkms {
     # install Dynamic Kernel Module Support packages if needed
-    local kernel_version=$(uname -r)
-    local kernel_major_minor=`echo $kernel_version | cut -d. -f1-2`
+    local kernel_version
+    kernel_version=$(uname -r)
+    local kernel_major_minor
+    kernel_major_minor=`echo $kernel_version | cut -d. -f1-2`
     # From kernel 3.13 on, openvswitch-datapath-dkms is not needed
     if [ `vercmp_numbers "$kernel_major_minor" "3.13"` -lt "0" ]; then
         install_package "dkms openvswitch-datapath-dkms linux-headers-$kernel_version"