diff --git a/pkg/exporters/gelf_exporter/trace.go b/pkg/exporters/gelf_exporter/trace.go
index 77a59b3..8811b66 100644
--- a/pkg/exporters/gelf_exporter/trace.go
+++ b/pkg/exporters/gelf_exporter/trace.go
@@ -2,6 +2,7 @@ package gelfexporter
 
 import (
 	"context"
+	"fmt"
 	"sync"
 
 	"git.ma-al.com/maal-libraries/observer/pkg/attr"
@@ -103,6 +104,8 @@ func (e *Exporter) ExportSpans(ctx context.Context, spans []trace.ReadOnlySpan)
 			}
 
 			gelf.ExtraFields = attributes
+			gelf.ExtraFields["tag"] = e.tag
+			fmt.Printf("gelf.ExtraFields: %v\n", gelf.ExtraFields)
 			Log(e.gelfWriter, gelf)
 		}