diff --git a/lib/http/cookie_jar.rb b/lib/http/cookie_jar.rb
index 48e943a..0f68f4c 100644
--- a/lib/http/cookie_jar.rb
+++ b/lib/http/cookie_jar.rb
@@ -144,7 +144,7 @@ class HTTP::CookieJar
 
   # Clear the cookie jar and return self.
   def clear
-    @jar = {}
+    @jar.clear
     self
   end