diff --git a/es/index.js b/es/index.js
index b351939..dc31454 100644
--- a/es/index.js
+++ b/es/index.js
@@ -118,7 +118,7 @@ var onRouteChangedHOC = function onRouteChangedHOC(DecoratedComponent) {
   config.mounted = config.mounted === undefined ? false : config.mounted;
   config.onlyPathname = config.onlyPathname === undefined ? true : config.onlyPathname;
   var componentName = DecoratedComponent.displayName || DecoratedComponent.name || 'Component';
-  var isReactComponent = DecoratedComponent.prototype.isReactComponent;
+  var isReactComponent = DecoratedComponent.prototype && DecoratedComponent.prototype.isReactComponent;
 
   var RouteChangedComponent =
   /*#__PURE__*/
diff --git a/src/index.js b/src/index.js
index 7089692..6129641 100644
--- a/src/index.js
+++ b/src/index.js
@@ -12,7 +12,7 @@ const onRouteChangedHOC = (DecoratedComponent, config = { mounted: false, onlyPa
   config.onlyPathname = config.onlyPathname === undefined ? true : config.onlyPathname
 
   const componentName = DecoratedComponent.displayName || DecoratedComponent.name || 'Component'
-  const isReactComponent = DecoratedComponent.prototype.isReactComponent
+  const isReactComponent = DecoratedComponent.prototype && DecoratedComponent.prototype.isReactComponent
 
   class RouteChangedComponent extends React.Component {
     static displayName = `OnRouteChanged(${componentName})`