diff --git a/src/vs/workbench/contrib/comments/test/browser/commentsView.test.ts b/src/vs/workbench/contrib/comments/test/browser/commentsView.test.ts
index cd5f0ddf60c..84e77afe298 100644
--- a/src/vs/workbench/contrib/comments/test/browser/commentsView.test.ts
+++ b/src/vs/workbench/contrib/comments/test/browser/commentsView.test.ts
@@ -19,6 +19,8 @@ import { DisposableStore } from 'vs/base/common/lifecycle';
 import { ensureNoDisposablesAreLeakedInTestSuite } from 'vs/base/test/common/utils';
 import { CancellationToken } from 'vs/base/common/cancellation';
 import { URI, UriComponents } from 'vs/base/common/uri';
+import { IHoverService } from 'vs/platform/hover/browser/hover';
+import { NullHoverService } from 'vs/platform/hover/test/browser/nullHoverService';
 
 class TestCommentThread implements CommentThread<IRange> {
 	isDocumentCommentThread(): this is CommentThread<IRange> {
@@ -118,6 +120,7 @@ suite('Comments View', function () {
 		disposables = new DisposableStore();
 		instantiationService = workbenchInstantiationService({}, disposables);
 		instantiationService.stub(IConfigurationService, new TestConfigurationService());
+		instantiationService.stub(IHoverService, NullHoverService);
 		instantiationService.stub(IContextViewService, {});
 		instantiationService.stub(IViewDescriptorService, new TestViewDescriptorService());
 		commentService = instantiationService.createInstance(CommentService);
diff --git a/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts b/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts
index b1a8af6a9de..f5576bacb7f 100644
--- a/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts
+++ b/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts
@@ -58,6 +58,8 @@ import { IViewsService } from 'vs/workbench/services/views/common/viewsService';
 import { ChatSlashCommandService, IChatSlashCommandService } from 'vs/workbench/contrib/chat/common/chatSlashCommands';
 import { ChatWidgetService } from 'vs/workbench/contrib/chat/browser/chatWidget';
 import { ChatWidgetHistoryService, IChatWidgetHistoryService } from 'vs/workbench/contrib/chat/common/chatWidgetHistoryService';
+import { IHoverService } from 'vs/platform/hover/browser/hover';
+import { NullHoverService } from 'vs/platform/hover/test/browser/nullHoverService';
 
 suite('InteractiveChatController', function () {
 	class TestController extends InlineChatController {
@@ -121,6 +123,7 @@ suite('InteractiveChatController', function () {
 			[IChatVariablesService, new MockChatVariablesService()],
 			[ILogService, new NullLogService()],
 			[ITelemetryService, NullTelemetryService],
+			[IHoverService, NullHoverService],
 			[IExtensionService, new TestExtensionService()],
 			[IContextKeyService, new MockContextKeyService()],
 			[IViewsService, new TestExtensionService()],