diff --git a/less/panels.less b/less/panels.less
index 425eb5e64..65aa3a83f 100644
--- a/less/panels.less
+++ b/less/panels.less
@@ -214,7 +214,7 @@
 }
 
 
-// Collapsable panels (aka, accordion)
+// Collapsible panels (aka, accordion)
 //
 // Wrap a series of panels in `.panel-group` to turn them into an accordion with
 // the help of our collapse JavaScript plugin.