diff --git a/jest.config.js b/jest.config.js
index 9c7d60a..3cb4f60 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -7,5 +7,6 @@ module.exports = {
   modulePaths: ['<rootDir>/src', '<rootDir>/node_modules'],
   moduleNameMapper: {
     '@microstates/react': '<rootDir>/dist/@microstates/react.umd.js'
-  }
+  },
+  testURL: 'http://localhost'
 };
diff --git a/src/microstates.js b/src/microstates.js
index 42faa42..55d4e50 100644
--- a/src/microstates.js
+++ b/src/microstates.js
@@ -50,7 +50,8 @@ export default class Microstates extends PureComponent {
       this._firstUpdate = false;
     } else {
       this.setState({ value });
-      this.props.onChange(value.state);    }
+      this.props.onChange(value.state);    
+    }
   }
   
   render() {