diff --git a/src/shared/dom.js b/src/shared/dom.js
index 2952755038..b57a19600a 100644
--- a/src/shared/dom.js
+++ b/src/shared/dom.js
@@ -243,5 +243,5 @@ export function addResizeListener(element, fn) {
 }
 
 export function toggleClass(element, name, toggle) {
-	element.classList.toggle(name, toggle);
+	element.classList.toggle(name, !!toggle);
 }