diff --git a/common/crypto/auth.go b/common/crypto/auth.go
index 0a8140b05..76993f2bc 100644
--- a/common/crypto/auth.go
+++ b/common/crypto/auth.go
@@ -99,7 +99,6 @@ func NewAuthenticationReader(auth Authenticator, sizeParser ChunkSizeDecoder, re
 		transferType: transferType,
 		padding:      paddingLen,
 		size:         -1,
-		paddingLen:   -1,
 	}
 }