diff --git a/example/src/main/java/org/apache/mina/example/httpserver/codec/HttpRequestDecoder.java b/example/src/main/java/org/apache/mina/example/httpserver/codec/HttpRequestDecoder.java
index 5c5f284..c18ff5f 100644
--- a/example/src/main/java/org/apache/mina/example/httpserver/codec/HttpRequestDecoder.java
+++ b/example/src/main/java/org/apache/mina/example/httpserver/codec/HttpRequestDecoder.java
@@ -107,6 +107,11 @@
                 return false;
             for (int i = 0; i < last; i++) {
                 boolean found = false;
+
+                // The Content-Length header is compared with
+                // a case-sensitive value. This portion of the
+                // code won't work if the client send a header
+                // with a different case.
                 for (int j = 0; j < CONTENT_LENGTH.length; j++) {
                     if (in.get(i + j) != CONTENT_LENGTH[j]) {
                         found = false;