diff --git a/lib/VirtualList.js b/lib/VirtualList.js
index fcfa26d..e4bb3ec 100644
--- a/lib/VirtualList.js
+++ b/lib/VirtualList.js
@@ -70,7 +70,7 @@ var VirtualList = function VirtualList(options) {
         _this.refreshState = _this.refreshState.bind(_this);
 
         // if requestAnimationFrame is available, use it to throttle refreshState
-        if (window && 'requestAnimationFrame' in window) {
+        if (typeof window !== 'undefined' && 'requestAnimationFrame' in window) {
           _this.refreshState = (0, _throttleWithRAF2.default)(_this.refreshState);
         }
         return _this;
diff --git a/src/VirtualList.js b/src/VirtualList.js
index 1531992..b8cf444 100644
--- a/src/VirtualList.js
+++ b/src/VirtualList.js
@@ -42,7 +42,7 @@ const VirtualList = (options, mapVirtualToProps = defaultMapToVirtualProps) => (
       this.refreshState = this.refreshState.bind(this);
 
       // if requestAnimationFrame is available, use it to throttle refreshState
-      if (window && 'requestAnimationFrame' in window) {
+      if (typeof window !== 'undefined' && 'requestAnimationFrame' in window) {
         this.refreshState = throttleWithRAF(this.refreshState);
       }
     };