diff --git a/src/framework/theme/components/cdk/overlay/overlay-position.ts b/src/framework/theme/components/cdk/overlay/overlay-position.ts
index 2d14a61fd8..c0be69d5a6 100644
--- a/src/framework/theme/components/cdk/overlay/overlay-position.ts
+++ b/src/framework/theme/components/cdk/overlay/overlay-position.ts
@@ -20,6 +20,7 @@ import { NbGlobalLogicalPosition } from './position-helper';
 import { GlobalPositionStrategy } from '@angular/cdk/overlay';
 
 
+export type NbAdjustmentValues = 'noop' | 'clockwise' | 'counterclockwise' | 'vertical' | 'horizontal';
 export enum NbAdjustment {
   NOOP = 'noop',
   CLOCKWISE = 'clockwise',
diff --git a/src/framework/theme/components/popover/popover.directive.ts b/src/framework/theme/components/popover/popover.directive.ts
index 64092035d7..ae3d375ddd 100644
--- a/src/framework/theme/components/popover/popover.directive.ts
+++ b/src/framework/theme/components/popover/popover.directive.ts
@@ -18,7 +18,7 @@ import {
 
 import { NbDynamicOverlay, NbDynamicOverlayController } from '../cdk/overlay/dynamic/dynamic-overlay';
 import { NbDynamicOverlayHandler } from '../cdk/overlay/dynamic/dynamic-overlay-handler';
-import { NbAdjustment, NbPosition, NbPositionValues } from '../cdk/overlay/overlay-position';
+import { NbAdjustment, NbPosition, NbPositionValues, NbAdjustmentValues } from '../cdk/overlay/overlay-position';
 import { NbOverlayContent } from '../cdk/overlay/overlay-service';
 import { NbTrigger, NbTriggerValues } from '../cdk/overlay/overlay-trigger';
 import { NbPopoverComponent } from './popover.component';
@@ -161,6 +161,7 @@ export class NbPopoverDirective implements NbDynamicOverlayController, OnChanges
     this._adjustment = value;
   }
   protected _adjustment: NbAdjustment = NbAdjustment.CLOCKWISE;
+  static ngAcceptInputType_adjustment: NbAdjustmentValues;
 
   /**
    * Describes when the container will be shown.
diff --git a/src/framework/theme/components/tooltip/tooltip.directive.ts b/src/framework/theme/components/tooltip/tooltip.directive.ts
index 884d81c675..ad1ad508af 100644
--- a/src/framework/theme/components/tooltip/tooltip.directive.ts
+++ b/src/framework/theme/components/tooltip/tooltip.directive.ts
@@ -19,7 +19,7 @@ import { skip, takeUntil } from 'rxjs/operators';
 import { Subject } from 'rxjs';
 
 import { NbComponentStatus } from '../component-status';
-import { NbAdjustment, NbPosition, NbPositionValues } from '../cdk/overlay/overlay-position';
+import { NbAdjustment, NbPosition, NbPositionValues, NbAdjustmentValues } from '../cdk/overlay/overlay-position';
 import { NbTrigger } from '../cdk/overlay/overlay-trigger';
 import { NbDynamicOverlay } from '../cdk/overlay/dynamic/dynamic-overlay';
 import { NbDynamicOverlayHandler } from '../cdk/overlay/dynamic/dynamic-overlay-handler';
@@ -111,6 +111,7 @@ export class NbTooltipDirective implements OnInit, OnChanges, AfterViewInit, OnD
     this._adjustment = value;
   }
   protected _adjustment: NbAdjustment = NbAdjustment.CLOCKWISE;
+  static ngAcceptInputType_adjustment: NbAdjustmentValues;
 
   @Input('nbTooltipClass')
   tooltipClass: string = '';