diff --git a/source/bounceInDown.css b/source/bounceInDown.css
index f724d4d..509703c 100644
--- a/source/bounceInDown.css
+++ b/source/bounceInDown.css
@@ -102,5 +102,6 @@
 	-webkit-animation-name: bounceInDown;
 	-moz-animation-name: bounceInDown;
 	-ms-animation-name: bounceInDown;
+	-o-animation-name: bounceInDown;
 	animation-name: bounceInDown;
 }
\ No newline at end of file