diff --git a/api/src/utils/parse-filter.ts b/api/src/utils/parse-filter.ts
index de046d1b5c..0ad716c122 100644
--- a/api/src/utils/parse-filter.ts
+++ b/api/src/utils/parse-filter.ts
@@ -14,9 +14,10 @@ export function parseFilter(filter: Filter, accountability: Accountability | nul
 			else return toArray(val);
 		}
 
-		if (val && val.startsWith('$NOW')) {
+		if (val && typeof val === 'string' && val.startsWith('$NOW')) {
 			if (val.includes('(') && val.includes(')')) {
 				const adjustment = val.match(/\(([^)]+)\)/)?.[1];
+				if (!adjustment) return new Date();
 				return adjustDate(new Date(), adjustment);
 			}