diff --git a/packages/model/bundle/bundle.go b/packages/model/bundle/bundle.go
index f2db703136c939ac72961cf8b50c88a7a927b0b7..e2e3aa8b4dfb847837ba0d6de8d8a1de0156e936 100644
--- a/packages/model/bundle/bundle.go
+++ b/packages/model/bundle/bundle.go
@@ -48,9 +48,9 @@ func (bundle *Bundle) SetHash(hash trinary.Trytes) {
 }
 
 func (bundle *Bundle) GetTransactionHashes() (result []trinary.Trytes) {
-	bundle.bundleEssenceHashMutex.RLock()
+	bundle.transactionHashesMutex.RLock()
 	result = bundle.transactionHashes
-	bundle.bundleEssenceHashMutex.RUnlock()
+	bundle.transactionHashesMutex.RUnlock()
 
 	return
 }