diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index 89663f4f22a1d537ad748793e95108c033883ca5..8bd7e3aef850671681c7ef74ec27ed12898ad1c2 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -540,7 +540,7 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 				return extHostProgress.withProgress(extension, { location: extHostTypes.ProgressLocation.SourceControl }, (progress, token) => task({ report(n: number) { /*noop*/ } }));
 			},
 			withProgress<R>(options: vscode.ProgressOptions, task: (progress: vscode.Progress<{ message?: string; worked?: number }>, token: vscode.CancellationToken) => Thenable<R>) {
-				if (typeof options.location !== 'number') {
+				if (typeof options.location === 'object') {
 					checkProposedApiEnabled(extension);
 				}
 				return extHostProgress.withProgress(extension, options, task);
diff --git a/src/vs/workbench/api/common/extHostTypeConverters.ts b/src/vs/workbench/api/common/extHostTypeConverters.ts
index 0a0034e0b441af8af001c63640c700482130d0f7..68869ca7237c77bb0781f54f4430e35c4ccaf059 100644
--- a/src/vs/workbench/api/common/extHostTypeConverters.ts
+++ b/src/vs/workbench/api/common/extHostTypeConverters.ts
@@ -1094,8 +1094,8 @@ export namespace EndOfLine {
 
 export namespace ProgressLocation {
 	export function from(loc: vscode.ProgressLocation | { viewId: string }): MainProgressLocation | string {
-		if (typeof loc === 'string') {
-			return loc;
+		if (typeof loc === 'object') {
+			return loc.viewId;
 		}
 
 		switch (loc) {