diff --git a/http/http-request.ios.ts b/http/http-request.ios.ts
index c625631a0..fb5bd25b8 100644
--- a/http/http-request.ios.ts
+++ b/http/http-request.ios.ts
@@ -67,14 +67,10 @@ export function request(options: http.HttpRequestOptions): Promise<http.HttpResp
                         var headers: http.Headers = {};
                         if (response && response.allHeaderFields) {
                             var headerFields = response.allHeaderFields;
-                            var keys = headerFields.allKeys;
-
-                            for (var i = 0, l = keys.count; i < l; i++) {
-                                let key = keys.objectAtIndex(i);
-                                let value = headerFields.valueForKey(key);
-                                
+                            
+                            headerFields.enumerateKeysAndObjectsUsingBlock((key, value, stop) => {
                                 (<any>http).addHeader(headers, key, value);
-                            }
+                            });
                         }
                         
                         if (debugRequest) {