diff --git a/provider/pipeline/pipeline.go b/provider/pipeline/pipeline.go
index b474a2f78..9d6bb92e2 100644
--- a/provider/pipeline/pipeline.go
+++ b/provider/pipeline/pipeline.go
@@ -113,7 +113,7 @@ func (p *Pipeline) transformXML(value []byte) []byte {
 	value = bytes.TrimSpace(value)
 
 	// only do a simple check, as some devices e.g. Kostal Piko MP plus don't seem to send proper XML
-	if !bytes.HasPrefix(value, []byte("<")) {
+	if !bytes.HasPrefix(value, []byte("<?xml")) {
 		return value
 	}