diff --git a/src/vs/workbench/browser/parts/compositePart.ts b/src/vs/workbench/browser/parts/compositePart.ts
index adac882f1d3a157aff3c33d4f102bea841e63dbf..9531cb8a75bf6bdf78003ac3113eb66f981c5fc4 100644
--- a/src/vs/workbench/browser/parts/compositePart.ts
+++ b/src/vs/workbench/browser/parts/compositePart.ts
@@ -168,7 +168,7 @@ export abstract class CompositePart<T extends Composite> extends Part {
 		// Instantiate composite from registry otherwise
 		const compositeDescriptor = this.registry.getComposite(id);
 		if (compositeDescriptor) {
-			const compositeProgressIndicator = this.instantiationService.createInstance(CompositeProgressIndicator, this.progressBar, compositeDescriptor.id, isActive);
+			const compositeProgressIndicator = this.instantiationService.createInstance(CompositeProgressIndicator, this.progressBar, compositeDescriptor.id, !!isActive);
 			const compositeInstantiationService = this.instantiationService.createChild(new ServiceCollection(
 				[IEditorProgressService, compositeProgressIndicator] // provide the editor progress service for any editors instantiated within the composite
 			));