diff --git a/backend/src/utils/normalizeText.ts b/backend/src/utils/normalizeText.ts
index 78360ea5..9c9765dc 100644
--- a/backend/src/utils/normalizeText.ts
+++ b/backend/src/utils/normalizeText.ts
@@ -150,7 +150,7 @@ const REPLACED_CHARS: Record<string, RegExp> = Array.from(Object.entries(REPLACE
   {},
 );
 
-const NORMAL_CHARS_REGEX = /^[a-z2689:.\-_+()*&^%><;"'}{~,]+$/i;
+const NORMAL_CHARS_REGEX = /^[a-z2689:.\-_+()*&^%><;"'}{~,\s]+$/i;
 
 function containsOnlyNormalChars(text: string) {
   return NORMAL_CHARS_REGEX.test(text);