diff --git a/src/ng2-smart-table/components/filter/filter-types/checkbox-filter.component.ts b/src/ng2-smart-table/components/filter/filter-types/checkbox-filter.component.ts
index 59086146c..cbd6362e3 100644
--- a/src/ng2-smart-table/components/filter/filter-types/checkbox-filter.component.ts
+++ b/src/ng2-smart-table/components/filter/filter-types/checkbox-filter.component.ts
@@ -3,6 +3,7 @@ import { FormControl } from '@angular/forms';
 
 import { DefaultFilter } from './default-filter';
 import { Column } from '../../../lib/data-set/column';
+import 'rxjs/add/operator/debounceTime';
 
 @Component({
   selector: 'checkbox-filter',
diff --git a/src/ng2-smart-table/components/filter/filter-types/completer-filter.component.ts b/src/ng2-smart-table/components/filter/filter-types/completer-filter.component.ts
index 3377bca56..cc9a8e768 100644
--- a/src/ng2-smart-table/components/filter/filter-types/completer-filter.component.ts
+++ b/src/ng2-smart-table/components/filter/filter-types/completer-filter.component.ts
@@ -4,6 +4,8 @@ import { CompleterService } from 'ng2-completer';
 
 import { DefaultFilter } from './default-filter';
 import { Column } from '../../../lib/data-set/column';
+import 'rxjs/add/operator/distinctUntilChanged';
+import 'rxjs/add/operator/debounceTime';
 
 @Component({
   selector: 'completer-filter',
diff --git a/src/ng2-smart-table/components/filter/filter-types/input-filter.component.ts b/src/ng2-smart-table/components/filter/filter-types/input-filter.component.ts
index 23ba47a4b..4678d06e1 100644
--- a/src/ng2-smart-table/components/filter/filter-types/input-filter.component.ts
+++ b/src/ng2-smart-table/components/filter/filter-types/input-filter.component.ts
@@ -3,6 +3,8 @@ import { FormControl } from '@angular/forms';
 
 import { DefaultFilter } from './default-filter';
 import { Column } from '../../../lib/data-set/column';
+import 'rxjs/add/operator/distinctUntilChanged';
+import 'rxjs/add/operator/debounceTime';
 
 @Component({
   selector: 'input-filter',
diff --git a/src/ng2-smart-table/components/filter/filter-types/select-filter.component.ts b/src/ng2-smart-table/components/filter/filter-types/select-filter.component.ts
index 57a7400e8..b594f5238 100644
--- a/src/ng2-smart-table/components/filter/filter-types/select-filter.component.ts
+++ b/src/ng2-smart-table/components/filter/filter-types/select-filter.component.ts
@@ -3,6 +3,8 @@ import { FormControl } from '@angular/forms';
 
 import { DefaultFilter } from './default-filter';
 import { Column } from '../../../lib/data-set/column';
+import 'rxjs/add/operator/distinctUntilChanged';
+import 'rxjs/add/operator/debounceTime';
 
 @Component({
   selector: 'select-filter',