diff --git a/themes/oni/css/style.css b/themes/oni/css/style.css
index 415252d..60d813d 100644
--- a/themes/oni/css/style.css
+++ b/themes/oni/css/style.css
@@ -98,5 +98,6 @@ pre.src:hover:before { display: inline; }
 pre.src-emacs-lisp:before { content: 'Emacs Lisp'; }
 pre.src-makefile:before { content: 'Makefile'; }
 pre.src-makefile-gmake:before { content: 'GNUMakefile'; }
+pre.src-python:before { content: 'Python'; }
 
 #text-footnotes { float: left; clear: left; padding-right: 0.5em; }