diff --git a/src/components/FlowForm.vue b/src/components/FlowForm.vue
index 81a6bcb..0cc7f37 100644
--- a/src/components/FlowForm.vue
+++ b/src/components/FlowForm.vue
@@ -307,7 +307,7 @@
               descriptionLink: LinkOption
             }
 
-            const defaultSlot = this.$slots.default()
+            const defaultSlot = this.$slots.default && this.$slots.default()
             let children = null
 
             if (defaultSlot && defaultSlot.length) {