diff --git a/src/android/Thumbnails.java b/src/android/Thumbnails.java
index 503bb06..29270f5 100755
--- a/src/android/Thumbnails.java
+++ b/src/android/Thumbnails.java
@@ -46,8 +46,8 @@ private static Bitmap thumbnailSmallImage(Options thumbnailOptions) throws Excep
         Bitmap bitmap = BitmapFactory.decodeFile(thumbnailOptions.sourcePath, options);
 
         if (bitmap == null) {
-            ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
-            String optionsJSON = ow.writeValueAsString(options);
+            ObjectWriter objectWriter = new ObjectMapper().writer().withDefaultPrettyPrinter();
+            String optionsJSON = objectWriter.writeValueAsString(options);
             throw new Exception("Could not decode file into bitmap object { sourcePath: " + thumbnailOptions.sourcePath + " options: " + optionsJSON + " }");
         }