diff --git a/node-daemon/monitoring/munin/pvc b/node-daemon/monitoring/munin/pvc
index a8be5ccc..59c277e9 100755
--- a/node-daemon/monitoring/munin/pvc
+++ b/node-daemon/monitoring/munin/pvc
@@ -123,7 +123,7 @@ output_values() {
     PVC_OUTPUT="$( $PVC_CMD )"
     HOST="$( hostname --short )"
 
-    in_maintenance="$( $JQ_CMD ".maintenance" <<<"${PVC_OUTPUT}" | tr -d '"' )"
+    is_maintenance="$( $JQ_CMD ".maintenance" <<<"${PVC_OUTPUT}" | tr -d '"' )"
 
     cluster_health="$( $JQ_CMD ".cluster_health.health" <<<"${PVC_OUTPUT}" | tr -d '"' )"
     cluster_health_messages="$( $JQ_CMD -r ".cluster_health.messages | @csv" <<<"${PVC_OUTPUT}" | tr -d '"' | sed 's/,/, /g' )"
@@ -147,9 +147,9 @@ output_values() {
     echo "pvc_node_health.value ${node_health}"
     echo "pvc_node_health.extinfo ${node_health_messages}"
 
-    if [[ ${node_health} -le 50 && ${is_maintenance} == "false" ]]; then
+    if [[ ${node_health} -le 50 && ${is_maintenance} != "true" ]]; then
         node_health_alert=2
-    elif [[ ${node_health} -le 90 && ${is_maintenance} == "false" ]]; then
+    elif [[ ${node_health} -le 90 && ${is_maintenance} != "true" ]]; then
         node_health_alert=1
     else
         node_health_alert=0