diff --git a/estransport/metrics.go b/estransport/metrics.go
index c01df0a2c3..b0a5a2211d 100644
--- a/estransport/metrics.go
+++ b/estransport/metrics.go
@@ -153,7 +153,6 @@ func (m Metrics) String() string {
 		if i+1 < len(m.Connections) {
 			b.WriteString(", ")
 		}
-		i++
 	}
 	b.WriteString("]")