diff --git a/src/test/utils/formatDataForRequest.spec.ts b/src/test/utils/formatDataForRequest.spec.ts
index 9a74998..a311c60 100644
--- a/src/test/utils/formatDataForRequest.spec.ts
+++ b/src/test/utils/formatDataForRequest.spec.ts
@@ -62,7 +62,7 @@ describe('formatDataForRequest', () => {
 
     expect(() => formatDataForRequest(tableWithMissingValues)).toThrow(
       new Error(
-        'Special missing value can only be a single character from A to Z or _'
+        'A Special missing value can only be a single character from A to Z or _ or .[a-z] or ._'
       )
     )
   })