diff --git a/frontend/src/lib/components/DateTimeInput.svelte b/frontend/src/lib/components/DateTimeInput.svelte
index 135ae94697..7524e1f724 100644
--- a/frontend/src/lib/components/DateTimeInput.svelte
+++ b/frontend/src/lib/components/DateTimeInput.svelte
@@ -3,9 +3,10 @@
 
 	export let autofocus: boolean = false
 
-	let dateFromValue = value ? new Date(value) : undefined
-	let date = dateFromValue ? dateFromValue.toISOString().split('T')[0] : undefined
-	let time = dateFromValue ? dateFromValue.toISOString().split('T')[1] : '00:00'
+	let dateFromValue: Date | undefined = value ? new Date(value) : undefined
+
+	let date = isValidDate(dateFromValue) ? dateFromValue!.toISOString().split('T')[0] : undefined
+	let time = isValidDate(dateFromValue) ? dateFromValue!.toISOString().split('T')[1] : '00:00'
 
 	$: {
 		if (date && time) {
@@ -13,6 +14,10 @@
 			value = newDate.toISOString()
 		}
 	}
+
+	function isValidDate(d: Date | undefined): boolean {
+		return d instanceof Date && !isNaN(d as any)
+	}
 </script>
 
 <div class="flex flex-row gap-1 items-center w-full">