diff --git a/packages/core/src/container/EdgeRenderer/EdgeRenderer.vue b/packages/core/src/container/EdgeRenderer/EdgeRenderer.vue
index 007c28e8..4a032e0f 100644
--- a/packages/core/src/container/EdgeRenderer/EdgeRenderer.vue
+++ b/packages/core/src/container/EdgeRenderer/EdgeRenderer.vue
@@ -105,7 +105,7 @@ const getType = (type?: string, template?: GraphEdge['template']) => {
   if (edgeType && typeof edgeType !== 'string') return edgeType
 
   const slot = slots?.[`edge-${name}`]
-  if (!slot?.({})) {
+  if (!slot) {
     warn(`Edge type "${type}" not found and no edge-slot detected. Using fallback type "default".`)
     return false
   }
diff --git a/packages/core/src/container/NodeRenderer/NodeRenderer.vue b/packages/core/src/container/NodeRenderer/NodeRenderer.vue
index 529ff401..7c8a378e 100644
--- a/packages/core/src/container/NodeRenderer/NodeRenderer.vue
+++ b/packages/core/src/container/NodeRenderer/NodeRenderer.vue
@@ -72,7 +72,7 @@ const getType = (type?: string, template?: GraphNode['template']) => {
   if (typeof nodeType !== 'string') return nodeType
 
   const slot = slots?.[`node-${name}`]
-  if (!slot?.({})) {
+  if (!slot) {
     warn(`Node type "${type}" not found and no node-slot detected. Using fallback type "default".`)
     return false
   }