diff --git a/client/response.go b/client/response.go
index a15a3d3..3a91a4b 100644
--- a/client/response.go
+++ b/client/response.go
@@ -28,7 +28,7 @@ func (r *Response) JoinURL(relativeURL string) string {
 		return ""
 	}
 
-	joinedURL := r.Response.Request.URL.ResolveReference(parsedRelativeURL)
+	joinedURL := r.Request.URL.ResolveReference(parsedRelativeURL)
 	return joinedURL.String()
 }