diff --git a/src/@ionic-native/plugins/file/index.ts b/src/@ionic-native/plugins/file/index.ts
index 69e7cd8d13..5d763a1d14 100644
--- a/src/@ionic-native/plugins/file/index.ts
+++ b/src/@ionic-native/plugins/file/index.ts
@@ -885,7 +885,7 @@ export class File extends IonicNativePlugin {
           };
 
           fileEntry.file(file => {
-            reader[`readAs${readAs}`].call(null, file);
+            reader[`readAs${readAs}`].call(reader, file);
           }, error => {
             reject(error);
           });