diff --git a/src/app/pages/explorer-page/explorer-page.component.ts b/src/app/pages/explorer-page/explorer-page.component.ts
index 23834610d508a560a96c8b9cf0e4b18b69544187..959f90715bc6200c43173a3d36db892c4d4c5fb1 100644
--- a/src/app/pages/explorer-page/explorer-page.component.ts
+++ b/src/app/pages/explorer-page/explorer-page.component.ts
@@ -443,9 +443,10 @@ export class ExplorerPageComponent implements OnInit, AfterViewInit {
           uniqueNodes.push(node);
         }
       });
-      this.toast.setNewToast({message: 'Duplicate node ids removed: ' + duplicateNodeIds.join(', '), type: 'warning'});
-      nodes = uniqueNodes;
-
+      if (duplicateNodeIds.length > 0) {
+        this.toast.setNewToast({message: 'Duplicate node ids removed: ' + duplicateNodeIds.join(', '), type: 'warning'});
+        nodes = uniqueNodes;
+      }
       this.nodeData.nodes = new vis.DataSet(nodes);
       this.nodeData.edges = new vis.DataSet(edges);