diff --git a/src/app/components/dialog/dialog.ts b/src/app/components/dialog/dialog.ts
index 72c8ece449f..a6e3d72c717 100755
--- a/src/app/components/dialog/dialog.ts
+++ b/src/app/components/dialog/dialog.ts
@@ -626,7 +626,10 @@ export class Dialog implements AfterContentInit, OnInit, OnDestroy {
                 this.unbindMaskClickListener();
             }
 
-            if (this.modal) {
+            // for nested dialogs w/modal
+            const scrollBlockers = document.querySelectorAll('.p-dialog-mask-scrollblocker');
+
+            if (this.modal && scrollBlockers && scrollBlockers.length == 1) {
                 DomHandler.unblockBodyScroll();
             }