diff --git a/gitiles-servlet/src/main/java/com/google/gitiles/doc/MarkdownToHtml.java b/gitiles-servlet/src/main/java/com/google/gitiles/doc/MarkdownToHtml.java
index 9de1a09..b88f4fd 100644
--- a/gitiles-servlet/src/main/java/com/google/gitiles/doc/MarkdownToHtml.java
+++ b/gitiles-servlet/src/main/java/com/google/gitiles/doc/MarkdownToHtml.java
@@ -229,13 +229,15 @@
           .close("span")
           .close("a");
       // github markdown compatibility
-      html.open("a")
-          .attribute("class", "h")
-          .attribute("name", id.toLowerCase())
-          .attribute("href", "#" + id.toLowerCase())
-          .open("span")
-          .close("span")
-          .close("a");
+      if (id != id.toLowerCase()) {
+        html.open("a")
+            .attribute("class", "h")
+            .attribute("name", id.toLowerCase())
+            .attribute("href", "#" + id.toLowerCase())
+            .open("span")
+            .close("span")
+            .close("a");
+      }
     }
     visitChildren(node);
     html.close(tag);