diff --git a/src/compiler/compile/render_dom/index.ts b/src/compiler/compile/render_dom/index.ts
index 17e5eaf750..14b415e12f 100644
--- a/src/compiler/compile/render_dom/index.ts
+++ b/src/compiler/compile/render_dom/index.ts
@@ -379,7 +379,7 @@ export default function dom(
 		});
 
 		let unknown_props_check;
-		if (component.compile_options.dev && !component.var_lookup.has('$$props') && writable_props.length) {
+		if (component.compile_options.dev && !component.var_lookup.has('$$props')) {
 			unknown_props_check = b`
 				const writable_props = [${writable_props.map(prop => x`'${prop.export_name}'`)}];
 				@_Object.keys($$props).forEach(key => {