diff --git a/theme/base/style/course.css b/theme/base/style/course.css
index 1ea71e6c13f..ecb2c3c0f72 100644
--- a/theme/base/style/course.css
+++ b/theme/base/style/course.css
@@ -23,7 +23,7 @@
 
 .path-course-view li.activity {margin-right:20px; position:relative;}
 .path-course-view li.activity span.autocompletion,
-.path-course-view li.activity form.togglecompletion {display:inline;position:absolute;right:-20px;top:0;z-index:10;padding:0.2em 0;}
+.path-course-view li.activity form.togglecompletion {display:inline;position:absolute;right:-20px;top:0;padding:0.2em 0;}
 .path-course-view li.activity form.togglecompletion div {display:inline;}
 .path-course-view li.activity form.togglecompletion .ajaxworking {position:absolute;top:0; left:20px;width: 20px; height: 20px;background: url([[pix:i/ajaxloader]]) no-repeat;}
 .dir-rtl.path-course-view li.activity {margin-right:0px;margin-left:20px;}