diff --git a/pkg/utils/utils.go b/pkg/utils/utils.go
index c2a4c80ea02691e77642caeef92b580681c6c4fc..a5eedfba6f03a992aa0f1419a2004c0d17c71637 100644
--- a/pkg/utils/utils.go
+++ b/pkg/utils/utils.go
@@ -95,7 +95,7 @@ func utsnameStr[T int8 | uint8](in []T) string {
 func GetInterfaceName(ifIndex uint32) string {
 	iface, err := net.InterfaceByIndex(int(ifIndex))
 	if err != nil {
-		return ""
+		return "unknown"
 	}
 	return iface.Name
 }