diff --git a/src/pkg/http/transport_test.go b/src/pkg/http/transport_test.go
index e46f830c82..05328fe5b0 100644
--- a/src/pkg/http/transport_test.go
+++ b/src/pkg/http/transport_test.go
@@ -288,10 +288,10 @@ func TestTransportHeadResponses(t *testing.T) {
 			t.Errorf("error on loop %d: %v", i, err)
 		}
 		if e, g := "123", res.Header.Get("Content-Length"); e != g {
-			t.Errorf("loop %d: expected Content-Length header of %q, got %q", e, g)
+			t.Errorf("loop %d: expected Content-Length header of %q, got %q", i, e, g)
 		}
 		if e, g := int64(0), res.ContentLength; e != g {
-			t.Errorf("loop %d: expected res.ContentLength of %v, got %v", e, g)
+			t.Errorf("loop %d: expected res.ContentLength of %v, got %v", i, e, g)
 		}
 	}
 }