diff --git a/signing.go b/signing.go
index f3c9421..fe1ee50 100644
--- a/signing.go
+++ b/signing.go
@@ -188,12 +188,11 @@ func setSignatureHeader(h http.Header, targetHeader, prefix, pubKeyId, algo, enc
 	b.WriteString(pubKeyId)
 	b.WriteString(parameterValueDelimiter)
 	b.WriteString(parameterSeparater)
-	// Algorithm (deprecated)
-	// TODO: Remove this.
+	// Algorithm
 	b.WriteString(algorithmParameter)
 	b.WriteString(parameterKVSeparater)
 	b.WriteString(parameterValueDelimiter)
-	b.WriteString(algo)
+	b.WriteString("hs2019") //real algorithm is hidden, see newest version of spec draft
 	b.WriteString(parameterValueDelimiter)
 	b.WriteString(parameterSeparater)
 	// Headers