diff --git a/lib/ceph b/lib/ceph
index 8e34aa4..29d2aca 100644
--- a/lib/ceph
+++ b/lib/ceph
@@ -83,7 +83,8 @@
 # ------------
 
 function get_ceph_version {
-    local ceph_version_str=$(sudo ceph daemon mon.$(hostname) version | cut -d '"' -f 4 | cut -f 1,2 -d '.')
+    local ceph_version_str
+    ceph_version_str=$(sudo ceph daemon mon.$(hostname) version | cut -d '"' -f 4 | cut -f 1,2 -d '.')
     echo $ceph_version_str
 }
 
@@ -106,7 +107,8 @@
 # undefine_virsh_secret() - Undefine Cinder key secret from libvirt
 function undefine_virsh_secret {
     if is_service_enabled cinder || is_service_enabled nova; then
-        local virsh_uuid=$(sudo virsh secret-list | awk '/^ ?[0-9a-z]/ { print $1 }')
+        local virsh_uuid
+        virsh_uuid=$(sudo virsh secret-list | awk '/^ ?[0-9a-z]/ { print $1 }')
         sudo virsh secret-undefine ${virsh_uuid} >/dev/null 2>&1
     fi
 }
@@ -219,7 +221,8 @@
     done
 
     # pools data and metadata were removed in the Giant release so depending on the version we apply different commands
-    local ceph_version=$(get_ceph_version)
+    local ceph_version
+    ceph_version=$(get_ceph_version)
     # change pool replica size according to the CEPH_REPLICAS set by the user
     if [[ ${ceph_version%%.*} -eq 0 ]] && [[ ${ceph_version##*.} -lt 87 ]]; then
         sudo ceph -c ${CEPH_CONF_FILE} osd pool set rbd size ${CEPH_REPLICAS}