diff --git a/source/Ox.UI/css/theme.css b/source/Ox.UI/css/theme.css
index 05913c66..c8dd56d2 100644
--- a/source/Ox.UI/css/theme.css
+++ b/source/Ox.UI/css/theme.css
@@ -331,6 +331,7 @@ Forms
 .$themeClass .OxButton.OxVideo,
 .$themeClass .OxButton.OxVideo:active,
 .$themeClass .OxButton.OxVideo.OxDisabled {
+    border-color: transparent;
     background-color: transparent;
     background-image: none;
 }