diff --git a/src/dehtml.rs b/src/dehtml.rs
index 03b40b3f5..a8b694bfb 100644
--- a/src/dehtml.rs
+++ b/src/dehtml.rs
@@ -51,8 +51,13 @@ impl Dehtml {
 
 #[derive(Debug, PartialEq, Clone, Copy)]
 enum AddText {
+    /// Inside `<script>`, `<style>` and similar tags
+    /// which contents should not be displayed.
     No,
+
     YesRemoveLineEnds,
+
+    /// Inside `<pre>`.
     YesPreserveLineEnds,
 }