diff --git a/client/src/lib/model.js b/client/src/lib/model.js
index 647b7f5..3733bbf 100644
--- a/client/src/lib/model.js
+++ b/client/src/lib/model.js
@@ -3,7 +3,7 @@ const asJson = (r) => r.json();
 
 const isBrowser = () => typeof window !== "undefined";
 const me = () => isBrowser() && localStorage.getItem("me");
-const isIOS =
+const isIOS = () =>
   isBrowser() &&
   /iPad|iPhone|iPod/.test(navigator.userAgent) &&
   !window.MSStream;
@@ -21,7 +21,7 @@ export const get = (endpoint) => async (href) => {
 export const icalHref = (href) => {
   const origin = API_ORIGIN;
   // webcal is not supported on Android devices
-  if (isIOS) {
+  if (isIOS()) {
     origin.replace(/https?/, "webcal");
   }
   return `${origin}/team?format=ics&url=${encodeURIComponent(href)}`;