diff --git a/auth/grpctransport/grpctransport.go b/auth/grpctransport/grpctransport.go
index 1299536e60c2..fc32a5f2bb21 100644
--- a/auth/grpctransport/grpctransport.go
+++ b/auth/grpctransport/grpctransport.go
@@ -175,7 +175,7 @@ func Dial(ctx context.Context, secure bool, opts *Options) (GRPCClientConnPool,
 	}
 	pool := &roundRobinConnPool{}
 	for i := 0; i < opts.PoolSize; i++ {
-		conn, err := dial(ctx, false, opts)
+		conn, err := dial(ctx, secure, opts)
 		if err != nil {
 			// ignore close error, if any
 			defer pool.Close()