diff --git a/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts b/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts
index 14deda0806e..021ac2e1b4a 100644
--- a/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts
+++ b/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts
@@ -17,7 +17,7 @@ import { EmbeddedCodeEditorWidget } from 'vs/editor/browser/widget/embeddedCodeE
 import { IEditorContribution } from 'vs/editor/common/editorCommon';
 import { IRange } from 'vs/editor/common/core/range';
 import * as modes from 'vs/editor/common/modes';
-import { peekViewEditorBackground, peekViewResultsBackground, peekViewResultsSelectionBackground } from 'vs/editor/contrib/referenceSearch/referencesWidget';
+import { peekViewEditorBackground, peekViewResultsBackground, peekViewResultsSelectionBackground, peekViewTitleBackground } from 'vs/editor/contrib/referenceSearch/referencesWidget';
 import { IContextKey, IContextKeyService, RawContextKey } from 'vs/platform/contextkey/common/contextkey';
 import { ServicesAccessor, IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
 import { KeybindingsRegistry, KeybindingWeight } from 'vs/platform/keybinding/common/keybindingsRegistry';
@@ -602,7 +602,7 @@ registerThemingParticipant((theme, collector) => {
 			`}`);
 	}
 
-	let monacoEditorBackground = theme.getColor(peekViewEditorBackground);
+	let monacoEditorBackground = theme.getColor(peekViewTitleBackground);
 	if (monacoEditorBackground) {
 		collector.addRule(
 			`.monaco-editor .review-widget .body .comment-form .review-thread-reply-button {` +
diff --git a/src/vs/workbench/parts/comments/electron-browser/media/review.css b/src/vs/workbench/parts/comments/electron-browser/media/review.css
index 59769ab6c93..c194e7d74fb 100644
--- a/src/vs/workbench/parts/comments/electron-browser/media/review.css
+++ b/src/vs/workbench/parts/comments/electron-browser/media/review.css
@@ -168,7 +168,7 @@
 	display: block;
 	width: 100%;
 	resize: vertical;
-	border-radius: 3px;
+	border-radius: 0;
 	box-sizing: border-box;
 	padding: 6px 12px;
 	font-weight: 600;