diff --git a/RCTCameraRollManager.m b/RCTCameraRollManager.m
index f8e6346df..64cf734b1 100644
--- a/RCTCameraRollManager.m
+++ b/RCTCameraRollManager.m
@@ -80,8 +80,8 @@ RCT_EXPORT_MODULE()
 
 @synthesize bridge = _bridge;
 
-NSString *const RCTErrorUnableToLoad = @"E_UNABLE_TO_LOAD";
-NSString *const RCTErrorUnableToSave = @"E_UNABLE_TO_SAVE";
+static NSString *const kErrorUnableToLoad = @"E_UNABLE_TO_LOAD";
+static NSString *const kErrorUnableToSave = @"E_UNABLE_TO_SAVE";
 
 RCT_EXPORT_METHOD(saveToCameraRoll:(NSURLRequest *)request
                   type:(NSString *)type
@@ -93,7 +93,7 @@ RCT_EXPORT_METHOD(saveToCameraRoll:(NSURLRequest *)request
     dispatch_async(dispatch_get_main_queue(), ^{
       [self->_bridge.assetsLibrary writeVideoAtPathToSavedPhotosAlbum:request.URL completionBlock:^(NSURL *assetURL, NSError *saveError) {
         if (saveError) {
-          reject(RCTErrorUnableToSave, nil, saveError);
+          reject(kErrorUnableToSave, nil, saveError);
         } else {
           resolve(assetURL.absoluteString);
         }
@@ -103,7 +103,7 @@ RCT_EXPORT_METHOD(saveToCameraRoll:(NSURLRequest *)request
     [_bridge.imageLoader loadImageWithURLRequest:request
                                         callback:^(NSError *loadError, UIImage *loadedImage) {
       if (loadError) {
-        reject(RCTErrorUnableToLoad, nil, loadError);
+        reject(kErrorUnableToLoad, nil, loadError);
         return;
       }
       // It's unclear if writeImageToSavedPhotosAlbum is thread-safe
@@ -111,7 +111,7 @@ RCT_EXPORT_METHOD(saveToCameraRoll:(NSURLRequest *)request
         [self->_bridge.assetsLibrary writeImageToSavedPhotosAlbum:loadedImage.CGImage metadata:nil completionBlock:^(NSURL *assetURL, NSError *saveError) {
           if (saveError) {
             RCTLogWarn(@"Error saving cropped image: %@", saveError);
-            reject(RCTErrorUnableToSave, nil, saveError);
+            reject(kErrorUnableToSave, nil, saveError);
           } else {
             resolve(assetURL.absoluteString);
           }
@@ -230,7 +230,7 @@ RCT_EXPORT_METHOD(getPhotos:(NSDictionary *)params
     if (error.code != ALAssetsLibraryAccessUserDeniedError) {
       RCTLogError(@"Failure while iterating through asset groups %@", error);
     }
-    reject(RCTErrorUnableToLoad, nil, error);
+    reject(kErrorUnableToLoad, nil, error);
   }];
 }