diff --git a/src/styles.js b/src/styles.js
index 4289c4d..a6c16d1 100644
--- a/src/styles.js
+++ b/src/styles.js
@@ -194,7 +194,8 @@ var STYLES = {
       width: '14px',
       height: '14px',
       fontWeight: 'bold',
-      textAlign: 'center'
+      textAlign: 'center',
+      lineHeight: '14px',
     },
 
     success: {