diff --git a/extensions/typescript-language-features/src/typescriptServiceClient.ts b/extensions/typescript-language-features/src/typescriptServiceClient.ts
index 43002c897ba99..74a3fb9f23ef6 100644
--- a/extensions/typescript-language-features/src/typescriptServiceClient.ts
+++ b/extensions/typescript-language-features/src/typescriptServiceClient.ts
@@ -601,21 +601,25 @@ export default class TypeScriptServiceClient extends Disposable implements IType
 			return resource.with({ path: path.posix.join(dirName, fileName), query: '' }).toString(true);
 		}
 
-		if (resource.scheme !== fileSchemes.file) {
-			return undefined;
-		}
-
 		let result = resource.fsPath;
 		if (!result) {
 			return undefined;
 		}
 
-		if (resource.scheme === fileSchemes.file) {
-			result = path.normalize(result);
+		if (!fileSchemes.isSupportedScheme(resource.scheme)) {
+			return undefined;
 		}
 
+		result = path.normalize(result);
+
 		// Both \ and / must be escaped in regular expressions
-		return result.replace(new RegExp('\\' + this.pathSeparator, 'g'), '/');
+		result = result.replace(new RegExp('\\' + this.pathSeparator, 'g'), '/');
+
+		if (resource.scheme !== fileSchemes.file) {
+			result = `${resource.scheme}:${result}`;
+		}
+
+		return result;
 	}
 
 	public toPath(resource: vscode.Uri): string | undefined {
diff --git a/extensions/typescript-language-features/src/utils/fileSchemes.ts b/extensions/typescript-language-features/src/utils/fileSchemes.ts
index 6efcfab4d3b71..600f7ff0ce322 100644
--- a/extensions/typescript-language-features/src/utils/fileSchemes.ts
+++ b/extensions/typescript-language-features/src/utils/fileSchemes.ts
@@ -7,11 +7,13 @@ export const file = 'file';
 export const untitled = 'untitled';
 export const git = 'git';
 export const walkThroughSnippet = 'walkThroughSnippet';
+export const zip = 'zip';
 
 export const supportedSchemes = [
 	file,
 	untitled,
-	walkThroughSnippet
+	walkThroughSnippet,
+	zip
 ];
 
 export function isSupportedScheme(scheme: string): boolean {