1 files changed, 2 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/module/http/HttpRequestUtil.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/module/http/HttpRequestUtil.java
index 66031ea724..6fdaca138e 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/module/http/HttpRequestUtil.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/module/http/HttpRequestUtil.java
@@ -1,5 +1,6 @@
 package com.mapbox.mapboxsdk.module.http;
 
+import android.support.annotation.NonNull;
 import okhttp3.OkHttpClient;
 import okio.Buffer;
 
@@ -44,6 +45,7 @@ public class HttpRequestUtil {
     HttpRequestImpl.setOkHttpClient(client);
   }
 
+  @NonNull
   static String toHumanReadableAscii(String s) {
     for (int i = 0, length = s.length(), c; i < length; i += Character.charCount(c)) {
       c = s.codePointAt(i);