diff --git a/helm/kolla-common/templates/_common_pvc.yaml b/helm/kolla-common/templates/_common_pvc.yaml
index 7ec8dce91..57cb0fd23 100644
--- a/helm/kolla-common/templates/_common_pvc.yaml
+++ b/helm/kolla-common/templates/_common_pvc.yaml
@@ -12,5 +12,5 @@ spec:
     - ReadWriteOnce
   resources:
     requests:
-      storage: {{ .volumeSizeGB }}
+      storage: {{ .volumeSizeGB }}Gi
 {{- end }}