diff --git a/src/views/Dashboard.vue b/src/views/Dashboard.vue
index 4c1d51b..a8703f5 100644
--- a/src/views/Dashboard.vue
+++ b/src/views/Dashboard.vue
@@ -103,9 +103,13 @@ export default {
           break;
       }
 
-      const max_id = maxBy(this.diagram.nodes, 'id').id
+      if (this.diagram.nodes.length > 0) {
+        const max_id = maxBy(this.diagram.nodes, 'id').id
 
-      newNode.id = max_id + 1;
+        newNode.id = max_id + 1;
+      } else {
+        newNode.id = 0;
+      }
 
       this.diagram.nodes.push(newNode)