diff --git a/src/vs/workbench/contrib/search/common/searchModel.ts b/src/vs/workbench/contrib/search/common/searchModel.ts
index 556d3d83b36db89ffaefeacab96ac2c857472bcf..832f7bcf88d2933c4d72e273c8349ab518cf5588 100644
--- a/src/vs/workbench/contrib/search/common/searchModel.ts
+++ b/src/vs/workbench/contrib/search/common/searchModel.ts
@@ -31,6 +31,7 @@ import { IConfigurationService } from 'vs/platform/configuration/common/configur
 import { compareFileNames, compareFileExtensions, comparePaths } from 'vs/base/common/comparers';
 import { IFileService, IFileStatWithMetadata } from 'vs/platform/files/common/files';
 import { Schemas } from 'vs/base/common/network';
+import { IUriIdentityService } from 'vs/workbench/services/uriIdentity/common/uriIdentity';
 
 export class Match {
 
@@ -710,7 +711,7 @@ export class SearchResult extends Disposable {
 
 	private _folderMatches: FolderMatchWithResource[] = [];
 	private _otherFilesMatch: FolderMatch | null = null;
-	private _folderMatchesMap: TernarySearchTree<URI, FolderMatchWithResource> = TernarySearchTree.forUris<FolderMatchWithResource>();
+	private _folderMatchesMap: TernarySearchTree<URI, FolderMatchWithResource> = TernarySearchTree.forUris2<FolderMatchWithResource>(key => this.uriIdentityService.extUri.ignorePathCasing(key));
 	private _showHighlights: boolean = false;
 	private _query: ITextQuery | null = null;
 
@@ -725,6 +726,7 @@ export class SearchResult extends Disposable {
 		@ITelemetryService private readonly telemetryService: ITelemetryService,
 		@IInstantiationService private readonly instantiationService: IInstantiationService,
 		@IModelService private readonly modelService: IModelService,
+		@IUriIdentityService private readonly uriIdentityService: IUriIdentityService,
 	) {
 		super();
 		this._rangeHighlightDecorations = this.instantiationService.createInstance(RangeHighlightDecorations);
@@ -755,7 +757,7 @@ export class SearchResult extends Disposable {
 			.then(() => this._isDirty = false);
 
 		this._rangeHighlightDecorations.removeHighlightRange();
-		this._folderMatchesMap = TernarySearchTree.forUris<FolderMatchWithResource>();
+		this._folderMatchesMap = TernarySearchTree.forUris2<FolderMatchWithResource>(key => this.uriIdentityService.extUri.ignorePathCasing(key));
 
 		if (!query) {
 			return;
@@ -977,7 +979,7 @@ export class SearchResult extends Disposable {
 	private disposeMatches(): void {
 		this.folderMatches().forEach(folderMatch => folderMatch.dispose());
 		this._folderMatches = [];
-		this._folderMatchesMap = TernarySearchTree.forUris<FolderMatchWithResource>();
+		this._folderMatchesMap = TernarySearchTree.forUris2<FolderMatchWithResource>(key => this.uriIdentityService.extUri.ignorePathCasing(key));
 		this._rangeHighlightDecorations.removeHighlightRange();
 	}