diff --git a/src/firefox-shim.js b/src/firefox-shim.js
index 8e949c4..205efab 100644
--- a/src/firefox-shim.js
+++ b/src/firefox-shim.js
@@ -1 +1,3 @@
 window.requestAnimationFrame = window.requestAnimationFrame.bind(window)
+window.setTimeout = window.setTimeout.bind(window)
+window.clearTimeout = window.clearTimeout.bind(window)