diff --git a/src/directives/ng-file-drop.ts b/src/directives/ng-file-drop.ts
index 8e812040..1ba217ed 100644
--- a/src/directives/ng-file-drop.ts
+++ b/src/directives/ng-file-drop.ts
@@ -10,8 +10,8 @@ import {
   OnInit,
   SimpleChange
 } from '@angular/core';
-import { NgUploaderService } from '../services/ngx-uploader';
-import { NgUploaderOptions, UploadedFile, UploadRejected } from '../classes/index';
+import {NgUploaderService} from '../services/ngx-uploader';
+import {NgUploaderOptions, UploadedFile, UploadRejected} from '../classes/index';
 
 @Directive({
   selector: '[ngFileDrop]',
@@ -30,9 +30,9 @@ export class NgFileDropDirective implements OnChanges, OnInit {
 
   files: File[] = [];
 
-  constructor(
-    @Inject(ElementRef) public el: ElementRef,
-    @Inject(NgUploaderService) public uploader: NgUploaderService) { }
+  constructor(@Inject(ElementRef) public el: ElementRef,
+              @Inject(NgUploaderService) public uploader: NgUploaderService) {
+  }
 
   ngOnInit() {
     this.uploader._emitter.subscribe((data: any) => {
@@ -63,7 +63,7 @@ export class NgFileDropDirective implements OnChanges, OnInit {
     this.initEvents();
   }
 
-  ngOnChanges(changes: {[propName: string]: SimpleChange}) {
+  ngOnChanges(changes: { [propName: string]: SimpleChange }) {
     if (!this.options || !changes) {
       return;
     }
@@ -100,7 +100,7 @@ export class NgFileDropDirective implements OnChanges, OnInit {
         }
 
         let ext = f.name.split('.').pop();
-        if (ext && allowedExtensions.indexOf(ext.toLowerCase()) !== -1 ) {
+        if (ext && allowedExtensions.indexOf(ext.toLowerCase()) !== -1) {
           return true;
         }
 
@@ -133,13 +133,17 @@ export class NgFileDropDirective implements OnChanges, OnInit {
 
   @HostListener('dragover', ['$event'])
   public onDragOver(e: any) {
-    if (!e) { return; }
+    if (!e) {
+      return;
+    }
     this.onFileOver.emit(true);
   }
 
   @HostListener('dragleave', ['$event'])
   public onDragLeave(e: any) {
-    if (!e) { return; }
+    if (!e) {
+      return;
+    }
     this.onFileOver.emit(false);
   }