diff --git a/src/app/utilities/ns-instances-action/NSInstancesActionComponent.ts b/src/app/utilities/ns-instances-action/NSInstancesActionComponent.ts
index 6ccfb1e..e68ce63 100644
--- a/src/app/utilities/ns-instances-action/NSInstancesActionComponent.ts
+++ b/src/app/utilities/ns-instances-action/NSInstancesActionComponent.ts
@@ -144,7 +144,7 @@
 
   /** Exec NS Primitive @public */
   public execNSPrimitiveModal(): void {
-    this.modalService.open(NSPrimitiveComponent).componentInstance.params = {
+    this.modalService.open(NSPrimitiveComponent, { backdrop: 'static' }).componentInstance.params = {
       memberIndex: this.value.memberIndex,
       nsConfig: this.value.nsConfig,
       name: this.value.NsdName