diff --git a/src/detail/crypto-helpers.cpp b/src/detail/crypto-helpers.cpp
index 72ad0b3..6956784 100644
--- a/src/detail/crypto-helpers.cpp
+++ b/src/detail/crypto-helpers.cpp
@@ -374,7 +374,7 @@
                                     block.get(tlv::EncryptedPayload).value_size(),
                                     associatedData, associatedDataSize, block.get(tlv::AuthenticationTag).value(),
                                     key, block.get(tlv::InitializationVector).value(), result.data());
-  if (resultLen == -1 || resultLen != block.get(tlv::EncryptedPayload).value_size()) {
+  if (resultLen != block.get(tlv::EncryptedPayload).value_size()) {
     return Buffer();
   }
   return result;