diff --git a/go/net/tinylb/connection_pool.go b/go/net/tinylb/connection_pool.go
index 956bf75..405dd1d 100644
--- a/go/net/tinylb/connection_pool.go
+++ b/go/net/tinylb/connection_pool.go
@@ -113,7 +113,7 @@
 	defer c.mu.Unlock()
 
 	res := make([]string, 0, len(c.idsByTarget))
-	for target, _ := range c.idsByTarget {
+	for target := range c.idsByTarget {
 		res = append(res, target)
 	}
 	sort.Strings(res)