diff --git a/api/src/utils/sanitize-query.ts b/api/src/utils/sanitize-query.ts
index cff469bd1f..960cb285c7 100644
--- a/api/src/utils/sanitize-query.ts
+++ b/api/src/utils/sanitize-query.ts
@@ -37,7 +37,7 @@ export function sanitizeQuery(
 		query.page = sanitizePage(rawQuery.page);
 	}
 
-	if (rawQuery.single) {
+	if (rawQuery.single || rawQuery.single === '') {
 		query.single = sanitizeSingle(rawQuery.single);
 	}
 
@@ -121,7 +121,11 @@ function sanitizePage(rawPage: any) {
 }
 
 function sanitizeSingle(rawSingle: any) {
-	return true;
+	if (rawSingle !== undefined && rawSingle !== null && ['', 'true', 1, '1'].includes(rawSingle)) {
+		return true;
+	}
+
+	return false;
 }
 
 function sanitizeMeta(rawMeta: any) {