diff --git a/src/ngxerror.directive.ts b/src/ngxerror.directive.ts
index d5b8b81..31df99f 100755
--- a/src/ngxerror.directive.ts
+++ b/src/ngxerror.directive.ts
@@ -1,6 +1,6 @@
 import { Directive, Input, OnInit, OnDestroy, DoCheck, Inject, HostBinding, forwardRef } from '@angular/core';
 
-import { Observable,  Subject,  Subscription, combineLatest } from 'rxjs';
+import { Observable,  Subject, Subscription, combineLatest } from 'rxjs';
 
 import { distinctUntilChanged, filter, map } from 'rxjs/operators';