1 files changed, 2 insertions, 2 deletions
diff --git a/vnext/src/components/Header.js b/vnext/src/components/Header.js
index 8bf4bc8d..91fa02fd 100644
--- a/vnext/src/components/Header.js
+++ b/vnext/src/components/Header.js
@@ -66,11 +66,11 @@ export default class Header extends React.Component {
         this.wScrollBefore = this.wScrollCurrent;
     }
     render() {
-        return (<header id="header" ref={this.header} style={this.props.style}>{this.props.children}</header>);
+        return (<header id="header" ref={this.header} style={this.props.style || {}}>{this.props.children}</header>);
     }
 }
 
 Header.propTypes = {
     children: PropTypes.node,
-    style: PropTypes.style
+    style: PropTypes.object
 };