diff --git a/index.js b/index.js
index 2b718ee..b17f146 100644
--- a/index.js
+++ b/index.js
@@ -50,7 +50,7 @@ const styles = StyleSheet.create({
 });
 
 class PercentageCircle extends Component {
-  propTypes: {
+  propTypes= {
     color: React.PropTypes.string,
     bgcolor: React.PropTypes.string,
     innerColor: React.PropTypes.string,