diff --git a/css/input-control/_input-control.scss b/css/input-control/_input-control.scss
index 82913e7b0..033e028a6 100644
--- a/css/input-control/_input-control.scss
+++ b/css/input-control/_input-control.scss
@@ -48,6 +48,9 @@
     }
 }
 
+/**
+ * Set a specific color for read only style.
+ */
 input:read-only {
     color: $readOnlyInputColor;
 }
\ No newline at end of file