diff --git a/src/browser/TestUtils.test.ts b/src/browser/TestUtils.test.ts
index 60861112..3e304bcf 100644
--- a/src/browser/TestUtils.test.ts
+++ b/src/browser/TestUtils.test.ts
@@ -4,7 +4,9 @@
  */
 
 import { IEvent, EventEmitter } from 'common/EventEmitter';
-import { ICharSizeService, IMouseService } from 'browser/services/Services';
+import { ICharSizeService, IMouseService, IRenderService } from 'browser/services/Services';
+import { IRenderDimensions, IRenderer, CharacterJoinerHandler } from 'browser/renderer/Types';
+import { IColorSet } from 'browser/Types';
 
 export class MockCharSizeService implements ICharSizeService {
   serviceBrand: any;
@@ -24,3 +26,72 @@ export class MockMouseService implements IMouseService {
     throw new Error('Not implemented');
   }
 }
+
+export class MockRenderService implements IRenderService {
+  serviceBrand: any;
+  onDimensionsChange: IEvent<IRenderDimensions> = new EventEmitter<IRenderDimensions>().event;
+  onRender: IEvent<{ start: number, end: number }, void> = new EventEmitter<{ start: number, end: number }>().event;
+  onRefreshRequest: IEvent<{ start: number, end: number}, void> = new EventEmitter<{ start: number, end: number }>().event;
+  dimensions: IRenderDimensions = {
+    scaledCharWidth: 0,
+    scaledCharHeight: 0,
+    scaledCellWidth: 0,
+    scaledCellHeight: 0,
+    scaledCharLeft: 0,
+    scaledCharTop: 0,
+    scaledCanvasWidth: 0,
+    scaledCanvasHeight: 0,
+    canvasWidth: 0,
+    canvasHeight: 0,
+    actualCellWidth: 0,
+    actualCellHeight: 0
+  };
+  refreshRows(start: number, end: number): void {
+    throw new Error('Method not implemented.');
+  }
+  resize(cols: number, rows: number): void {
+    throw new Error('Method not implemented.');
+  }
+  changeOptions(): void {
+    throw new Error('Method not implemented.');
+  }
+  setRenderer(renderer: IRenderer): void {
+    throw new Error('Method not implemented.');
+  }
+  setColors(colors: IColorSet): void {
+    throw new Error('Method not implemented.');
+  }
+  onDevicePixelRatioChange(): void {
+    throw new Error('Method not implemented.');
+  }
+  onResize(cols: number, rows: number): void {
+    throw new Error('Method not implemented.');
+  }
+  onCharSizeChanged(): void {
+    throw new Error('Method not implemented.');
+  }
+  onBlur(): void {
+    throw new Error('Method not implemented.');
+  }
+  onFocus(): void {
+    throw new Error('Method not implemented.');
+  }
+  onSelectionChanged(start: [number, number], end: [number, number], columnSelectMode: boolean): void {
+    throw new Error('Method not implemented.');
+  }
+  onCursorMove(): void {
+    throw new Error('Method not implemented.');
+  }
+  clear(): void {
+    throw new Error('Method not implemented.');
+  }
+  registerCharacterJoiner(handler: CharacterJoinerHandler): number {
+    throw new Error('Method not implemented.');
+  }
+  deregisterCharacterJoiner(joinerId: number): boolean {
+    throw new Error('Method not implemented.');
+  }
+  dispose(): void {
+    throw new Error('Method not implemented.');
+  }
+}
diff --git a/src/browser/services/SelectionService.test.ts b/src/browser/services/SelectionService.test.ts
index 62ca3819..cd787531 100644
--- a/src/browser/services/SelectionService.test.ts
+++ b/src/browser/services/SelectionService.test.ts
@@ -10,16 +10,18 @@ import { IBufferLine } from 'common/Types';
 import { MockBufferService, MockOptionsService, MockCoreService } from 'common/TestUtils.test';
 import { BufferLine } from 'common/buffer/BufferLine';
 import { IBufferService, IOptionsService } from 'common/services/Services';
-import { MockCharSizeService, MockMouseService } from 'browser/TestUtils.test';
+import { MockMouseService, MockRenderService } from 'browser/TestUtils.test';
 import { CellData } from 'common/buffer/CellData';
 import { IBuffer } from 'common/buffer/Types';
+import { IRenderService } from 'browser/services/Services';
 
 class TestSelectionService extends SelectionService {
   constructor(
     bufferService: IBufferService,
-    optionsService: IOptionsService
+    optionsService: IOptionsService,
+    renderService: IRenderService
   ) {
-    super(() => {}, null!, null!, new MockCharSizeService(10, 10), bufferService, new MockCoreService(), new MockMouseService(), optionsService);
+    super(() => {}, null!, null!, bufferService, new MockCoreService(), new MockMouseService(), optionsService, renderService);
   }
 
   public get model(): SelectionModel { return this._model; }
@@ -46,7 +48,10 @@ describe('SelectionService', () => {
     optionsService = new MockOptionsService();
     bufferService = new MockBufferService(20, 20, optionsService);
     buffer = bufferService.buffer;
-    selectionService = new TestSelectionService(bufferService, optionsService);
+    const renderService = new MockRenderService();
+    renderService.dimensions.canvasHeight = 10 * 20;
+    renderService.dimensions.canvasWidth = 10 * 20;
+    selectionService = new TestSelectionService(bufferService, optionsService, renderService);
   });
 
   function stringToRow(text: string): IBufferLine {
diff --git a/src/browser/services/SelectionService.ts b/src/browser/services/SelectionService.ts
index f2f46a94..45424d16 100644
--- a/src/browser/services/SelectionService.ts
+++ b/src/browser/services/SelectionService.ts
@@ -10,7 +10,7 @@ import * as Browser from 'common/Platform';
 import { SelectionModel } from 'browser/selection/SelectionModel';
 import { CellData } from 'common/buffer/CellData';
 import { EventEmitter, IEvent } from 'common/EventEmitter';
-import { ICharSizeService, IMouseService, ISelectionService } from 'browser/services/Services';
+import { ICharSizeService, IMouseService, ISelectionService, IRenderService } from 'browser/services/Services';
 import { IBufferService, IOptionsService, ICoreService } from 'common/services/Services';
 import { getCoordsRelativeToElement } from 'browser/input/Mouse';
 import { moveToCellSequence } from 'browser/input/MoveToCell';
@@ -116,11 +116,11 @@ export class SelectionService implements ISelectionService {
     private readonly _scrollLines: (amount: number, suppressEvent: boolean) => void,
     private readonly _element: HTMLElement,
     private readonly _screenElement: HTMLElement,
-    @ICharSizeService private readonly _charSizeService: ICharSizeService,
     @IBufferService private readonly _bufferService: IBufferService,
     @ICoreService private readonly _coreService: ICoreService,
     @IMouseService private readonly _mouseService: IMouseService,
-    @IOptionsService private readonly _optionsService: IOptionsService
+    @IOptionsService private readonly _optionsService: IOptionsService,
+    @IRenderService private readonly _renderService: IRenderService
   ) {
     // Init listeners
     this._mouseMoveListener = event => this._onMouseMove(<MouseEvent>event);
@@ -374,7 +374,7 @@ export class SelectionService implements ISelectionService {
    */
   private _getMouseEventScrollAmount(event: MouseEvent): number {
     let offset = getCoordsRelativeToElement(event, this._screenElement)[1];
-    const terminalHeight = this._bufferService.rows * Math.ceil(this._charSizeService.height * this._optionsService.options.lineHeight);
+    const terminalHeight = this._renderService.dimensions.canvasHeight;
     if (offset >= 0 && offset <= terminalHeight) {
       return 0;
     }