diff --git a/library/common/templates/class/cnpg/_cluster.tpl b/library/common/templates/class/cnpg/_cluster.tpl
index 759b0375..03d04820 100644
--- a/library/common/templates/class/cnpg/_cluster.tpl
+++ b/library/common/templates/class/cnpg/_cluster.tpl
@@ -53,14 +53,14 @@
   {{/* Postgres UID and GID */}}
   {{- $validTypes := (list "int" "int64" "float64") -}}
   {{- if $objectData.cluster.postgresUID -}}
-    {{- if not mustHas (kindOf $objectData.cluster.postgresUID) $validTypes -}}
+    {{- if not (mustHas (kindOf $objectData.cluster.postgresUID) $validTypes) -}}
       {{- fail (printf "CNPG Cluster - Expected [cluster.postgresUID] to be an integer, but got [%s]" (kindOf $objectData.cluster.postgresUID)) -}}
     {{- end -}}
     {{- $pgUID = $objectData.cluster.postgresUID -}}
   {{- end -}}
 
   {{- if $objectData.cluster.postgresGID -}}
-    {{- if not mustHas (kindOf $objectData.cluster.postgresGID) $validTypes -}}
+    {{- if not (mustHas (kindOf $objectData.cluster.postgresGID) $validTypes) -}}
       {{- fail (printf "CNPG Cluster - Expected [cluster.postgresGID] to be an integer, but got [%s]" (kindOf $objectData.cluster.postgresGID)) -}}
     {{- end -}}
     {{- $pgGID = $objectData.cluster.postgresGID -}}