diff --git a/src/adapters/adyoulike.js b/src/adapters/adyoulike.js
index 3968de6ce8f1..7ee65eebe067 100644
--- a/src/adapters/adyoulike.js
+++ b/src/adapters/adyoulike.js
@@ -66,8 +66,17 @@ var AdyoulikeAdapter = function AdyoulikeAdapter() {
       Placements: placements,
     };
 
-    if (performance && performance.navigation) {
-      body.PageRefreshed = performance.navigation.type === performance.navigation.TYPE_RELOAD;
+    // performance isn't supported by mobile safari iOS7. window.performance works, but
+    // evaluates to true on a unit test which expects false.
+    //
+    // try/catch was added to un-block the Prebid 0.25 release, but the adyoulike adapter
+    // maintainers should revisit this and see if it's really what they want.
+    try {
+      if (performance && performance.navigation) {
+        body.PageRefreshed = performance.navigation.type === performance.navigation.TYPE_RELOAD;
+      }
+    } catch (e) {
+      body.PageRefreshed = false;
     }
 
     return JSON.stringify(body);