diff --git a/server/shell.ts b/server/shell.ts
index 7022a25..3428471 100644
--- a/server/shell.ts
+++ b/server/shell.ts
@@ -1356,6 +1356,7 @@ const SUBNAV_CSS = `
 
 /** Build the module sub-nav bar from outputPaths + subPageInfos. */
 function renderModuleSubNav(moduleId: string, spaceSlug: string, modules: ModuleInfo[]): string {
+	if (moduleId === 'rspace') return ''; // canvas page has its own chrome
 	const mod = modules.find(m => m.id === moduleId);
 	if (!mod) return '';