diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/a11y/index.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/a11y/index.js
index cf48fae481..744027ca9c 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/a11y/index.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/a11y/index.js
@@ -389,7 +389,7 @@ export function check_element(node, context) {
 		case 'button': {
 			const is_hidden =
 				get_static_value(attribute_map.get('aria-hidden')) === 'true' ||
-				get_static_value(attribute_map.get('inert'));
+				get_static_value(attribute_map.get('inert')) === null;
 
 			if (!has_spread && !is_hidden && !is_labelled && !has_content(node)) {
 				w.a11y_consider_explicit_label(node);