diff --git a/src/ext/hyper_http.rs b/src/ext/hyper_http.rs
new file mode 100644
index 0000000..1f52a12
--- /dev/null
+++ b/src/ext/hyper_http.rs
@@ -0,0 +1 @@
+// hyper's http specific extension to generate and verify http signature
diff --git a/src/ext/mod.rs b/src/ext/mod.rs
new file mode 100644
index 0000000..e1c413c
--- /dev/null
+++ b/src/ext/mod.rs
@@ -0,0 +1 @@
+mod hyper_http;
diff --git a/src/hyper_http_ext.rs b/src/hyper_http_ext.rs
deleted file mode 100644
index e69de29..0000000
diff --git a/src/lib.rs b/src/lib.rs
index f399309..fe0f86b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,5 @@
 mod crypto;
-mod hyper_http_ext;
+mod ext;
 mod message_component;
 mod signature_base;
 mod signature_params;