diff --git a/less/forms.less b/less/forms.less
index 77b5135a4040..6fe0383ef9fe 100644
--- a/less/forms.less
+++ b/less/forms.less
@@ -209,7 +209,7 @@ input[type="checkbox"]:focus {
 // Placeholder
 // -------------------------
 
-// Placeholder text gets special styles; can't be bundled together though for some reason
+// Placeholder text gets special styles; can't be bundled together because when a browser doesn’t understand a selector, it invalidates the entire line of selectors (except IE 7)
 input,
 textarea {
   .placeholder();