diff --git a/paper-share-button.html b/paper-share-button.html
index 0230f29..efbbda6 100644
--- a/paper-share-button.html
+++ b/paper-share-button.html
@@ -40,6 +40,8 @@
 ----------------|-------------|----------
 `--paper-share-button-icon-height` | Height of social media icons | 40px
 `--paper-share-button-icon-width` | Width of social media icons | 40px
+`--paper-share-button-share-icon-height` | Height of social share icon | 40px
+`--paper-share-button-share-icon-width` | Width of social share icon | 40px
 `--paper-share-button-monochrome-color` | The monochrome color | #000000
 
 @demo demo/index.html