diff --git a/okhttp/src/main/java/com/squareup/okhttp/Call.java b/okhttp/src/main/java/com/squareup/okhttp/Call.java
index 99393cf1e..3fa9abd40 100644
--- a/okhttp/src/main/java/com/squareup/okhttp/Call.java
+++ b/okhttp/src/main/java/com/squareup/okhttp/Call.java
@@ -44,7 +44,7 @@ public class Call {
   Request originalRequest;
   HttpEngine engine;
 
-  Call(OkHttpClient client, Request originalRequest) {
+  protected Call(OkHttpClient client, Request originalRequest) {
     // Copy the client. Otherwise changes (socket factory, redirect policy,
     // etc.) may incorrectly be reflected in the request when it is executed.
     this.client = client.copyWithDefaults();