diff --git a/frontend/src/lib/components/FlowBuilder.svelte b/frontend/src/lib/components/FlowBuilder.svelte
index ddd0967427..47d16f7259 100644
--- a/frontend/src/lib/components/FlowBuilder.svelte
+++ b/frontend/src/lib/components/FlowBuilder.svelte
@@ -30,10 +30,10 @@
 
 	let previewOpen = false
 
-	let scheduleArgs: Record<string, any>
-	let previewArgs: Record<string, any>
-	let scheduleEnabled: boolean
-	let scheduleCron: string
+	let scheduleArgs: Record<string, any> = {}
+	let previewArgs: Record<string, any> = {}
+	let scheduleEnabled: boolean = false
+	let scheduleCron: string = ''
 
 	$: step = Number($page.url.searchParams.get('step')) || 1
 
diff --git a/frontend/src/lib/components/SchemaForm.svelte b/frontend/src/lib/components/SchemaForm.svelte
index 2beda855fd..f7796aaf3b 100644
--- a/frontend/src/lib/components/SchemaForm.svelte
+++ b/frontend/src/lib/components/SchemaForm.svelte
@@ -17,7 +17,7 @@
 	let inputCheck: { [id: string]: boolean } = {}
 	$: isValid = allTrue(inputCheck) ?? false
 
-	$: if (!args) {
+	$: if (args == undefined) {
 		args = {}
 	}