diff --git a/src/libs/TransactionUtils/index.ts b/src/libs/TransactionUtils/index.ts
index 1fc7cad2f456..e7eea51c7755 100644
--- a/src/libs/TransactionUtils/index.ts
+++ b/src/libs/TransactionUtils/index.ts
@@ -884,11 +884,11 @@ function hasNoticeTypeViolation(transactionID: string, transactionViolations: On
 /**
  * Checks if any violations for the provided transaction are of type 'warning'
  */
-function hasWarningTypeViolation(transactionID: string, transactionViolations: OnyxCollection<TransactionViolation[]>, showInReview?: boolean | null): boolean {
+function hasWarningTypeViolation(transactionID: string, transactionViolations: OnyxCollection<TransactionViolation[]>, showInReview?: boolean): boolean {
     const violations = transactionViolations?.[ONYXKEYS.COLLECTION.TRANSACTION_VIOLATIONS + transactionID];
     const warningTypeViolations =
         violations?.filter(
-            (violation: TransactionViolation) => violation.type === CONST.VIOLATION_TYPES.WARNING && (showInReview === null || showInReview === (violation.showInReview ?? false)),
+            (violation: TransactionViolation) => violation.type === CONST.VIOLATION_TYPES.WARNING && (showInReview === undefined || showInReview === (violation.showInReview ?? false)),
         ) ?? [];
 
     const hasOnlyDupeDetectionViolation = warningTypeViolations?.every((violation: TransactionViolation) => violation.name === CONST.VIOLATIONS.DUPLICATED_TRANSACTION);