diff --git a/app/src/main/java/se/leap/bitmaskclient/ProviderApiManagerBase.java b/app/src/main/java/se/leap/bitmaskclient/ProviderApiManagerBase.java
index 9f5fdc2d432c13ea20bdb8f7e267763a3d70ae66..464898a5538f67307a5e5761b6ba09ecfc0a6a77 100644
--- a/app/src/main/java/se/leap/bitmaskclient/ProviderApiManagerBase.java
+++ b/app/src/main/java/se/leap/bitmaskclient/ProviderApiManagerBase.java
@@ -507,7 +507,7 @@ public abstract class ProviderApiManagerBase {
      * @return response from authentication server
      */
     private JSONObject sendToServer(String url, String request_method, String jsonString, OkHttpClient okHttpClient) {
-        return requestJsonFromServer(url, request_method, jsonString, null, okHttpClient);
+        return requestJsonFromServer(url, request_method, jsonString, new ArrayList<Pair<String, String>>(), okHttpClient);
     }
 
     protected String sendGetStringToServer(@NonNull String url, @NonNull List<Pair<String, String>> headerArgs, @NonNull OkHttpClient okHttpClient) {