diff --git a/React/Base/RCTJavaScriptLoader.mm b/React/Base/RCTJavaScriptLoader.mm
index eacdf024f..60fa2c682 100755
--- a/React/Base/RCTJavaScriptLoader.mm
+++ b/React/Base/RCTJavaScriptLoader.mm
@@ -230,7 +230,7 @@ static void attemptAsynchronousLoadOfBundleAtURL(NSURL *scriptURL, RCTSourceLoad
 
     // For multipart responses packager sets X-Http-Status header in case HTTP status code
     // is different from 200 OK
-    NSString *statusCodeHeader = [headers valueForKey:@"X-Http-Status"];
+    NSString *statusCodeHeader = headers[@"X-Http-Status"];
     if (statusCodeHeader) {
       statusCode = [statusCodeHeader integerValue];
     }
@@ -263,9 +263,9 @@ static RCTLoadingProgress *progressEventFromData(NSData *rawData)
   }
 
   RCTLoadingProgress *progress = [RCTLoadingProgress new];
-  progress.status = [info valueForKey:@"status"];
-  progress.done = [info valueForKey:@"done"];
-  progress.total = [info valueForKey:@"total"];
+  progress.status = info[@"status"];
+  progress.done = info[@"done"];
+  progress.total = info[@"total"];
   return progress;
 }
 
@@ -281,12 +281,11 @@ static NSDictionary *userInfoForRawResponse(NSString *rawText)
   }
   NSMutableArray<NSDictionary *> *fakeStack = [NSMutableArray new];
   for (NSDictionary *err in errors) {
-    [fakeStack addObject:
-     @{
+    [fakeStack addObject: @{
        @"methodName": err[@"description"] ?: @"",
        @"file": err[@"filename"] ?: @"",
        @"lineNumber": err[@"lineNumber"] ?: @0
-       }];
+    }];
   }
   return @{NSLocalizedDescriptionKey: parsedResponse[@"message"] ?: @"No message provided", @"stack": [fakeStack copy]};
 }