diff --git a/.gitignore b/.gitignore
index f428af5..72fe71e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,10 +16,8 @@ node_modules
 *.launch
 .settings/
 *.sublime-workspace
-
 # IDE - VSCode
 .vscode/*
-!.vscode/settings.json
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index 748a9e8..0000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,25 +0,0 @@
-// Place your settings in this file to overwrite default and user settings.
-{
-    "files.exclude": {
-        "**/.git": true,
-        "**/.svn": true,
-        "**/.DS_Store": true,
-        "**/*.js": {
-            "when": "$(basename).ts"
-        },
-        "**/*.js.map": false
-    },
-    "search.exclude": {
-        "**/node_modules": true,
-        "**/bower_components": true,
-        "/dist": true
-    },
-    "files.watcherExclude": {
-        "**/.git/objects/**": true,
-        "**/.git/subtree-cache/**": true,
-        "**/node_modules/*/**": true,
-        "/dist": true
-    },
-    "typescript.tsdk": "./node_modules/typescript/lib",
-    "git.ignoreLimitWarning": true
-}
diff --git a/projects/ngx-clipboard/src/lib/ngx-clipboard.service.ts b/projects/ngx-clipboard/src/lib/ngx-clipboard.service.ts
index df84f13..705e699 100644
--- a/projects/ngx-clipboard/src/lib/ngx-clipboard.service.ts
+++ b/projects/ngx-clipboard/src/lib/ngx-clipboard.service.ts
@@ -1,4 +1,4 @@
-import { Inject, Injectable } from '@angular/core';
+import { Inject, Injectable, Optional } from '@angular/core';
 import { DOCUMENT } from '@angular/platform-browser';
 import { WINDOW } from 'ngx-window-token';
 
@@ -7,7 +7,7 @@ import { WINDOW } from 'ngx-window-token';
 @Injectable({ providedIn: 'root' })
 export class ClipboardService {
     private tempTextArea: HTMLTextAreaElement | undefined;
-    constructor(@Inject(DOCUMENT) public document: any, @Inject(WINDOW) private window: any) {}
+    constructor(@Inject(DOCUMENT) public document: any, @Optional() @Inject(WINDOW) private window: any) {}
     public get isSupported(): boolean {
         return !!this.document.queryCommandSupported && !!this.document.queryCommandSupported('copy') && !!this.window;
     }