diff --git a/src/components/graph/NodeTooltip.vue b/src/components/graph/NodeTooltip.vue
index f16e4ea3e..5f06386ba 100644
--- a/src/components/graph/NodeTooltip.vue
+++ b/src/components/graph/NodeTooltip.vue
@@ -68,7 +68,7 @@ const onIdle = () => {
     ctor.title_mode !== LiteGraph.NO_TITLE &&
     canvas.graph_mouse[1] < node.pos[1] // If we are over a node, but not within the node then we are on its title
   ) {
-    return showTooltip(nodeDef.description)
+    return showTooltip(nodeDef?.description)
   }
 
   if (node.flags?.collapsed) return