diff --git a/sip/parse_uri_test.go b/sip/parse_uri_test.go
index 26f442c..4f54911 100644
--- a/sip/parse_uri_test.go
+++ b/sip/parse_uri_test.go
@@ -39,6 +39,7 @@ func TestParseUri(t *testing.T) {
 	})
 
 	t.Run("sip case insensitive", func(t *testing.T) {
+		uri = Uri{}
 		testCases := []string{
 			"sip:alice@atlanta.com",
 			"SIP:alice@atlanta.com",