diff --git a/.gitignore b/.gitignore
index f268eff1c..be6c965df 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@ MANIFEST
 /dist
 /tmp
 /doc
+/venv
 *.py[cdo]
 *.swp
 *.swo
diff --git a/libmproxy/flow.py b/libmproxy/flow.py
index 883c7235a..4fefee9f1 100644
--- a/libmproxy/flow.py
+++ b/libmproxy/flow.py
@@ -463,7 +463,7 @@ class Request(HTTPMsg):
         """
             Returns a URL string, constructed from the Request's URL compnents.
         """
-        return utils.unparse_url(self.scheme, self.host.decode("idna"), self.port, self.path).encode('ascii')
+        return utils.unparse_url(self.scheme, self.host.encode("idna"), self.port, self.path).encode('ascii')
 
     def set_url(self, url):
         """
diff --git a/test/fuzzing/go_proxy b/test/fuzzing/go_proxy
new file mode 100755
index 000000000..1e6bbaeff
--- /dev/null
+++ b/test/fuzzing/go_proxy
@@ -0,0 +1,9 @@
+#!/bin/sh
+# Assuming:
+#   mitmproxy/mitmdump is running on port 8080 in straight proxy mode.
+#   pathod is running on port 9999
+
+BASE="/Users/aldo/git/public/pathod/venv/bin/pathoc -eo -I 200,400,502 -p 8080 localhost "
+$BASE -n 1000 "get:'http://localhost:9999':ir,@1"
+
+
diff --git a/test/test_fuzzing.py b/test/test_fuzzing.py
new file mode 100644
index 000000000..4b4253d87
--- /dev/null
+++ b/test/test_fuzzing.py
@@ -0,0 +1,12 @@
+import tservers
+
+"""
+    A collection of errors turned up by fuzzing. 
+"""
+
+class TestFuzzy(tservers.HTTPProxTest):
+    def test_idna_err(self):
+        req = r'get:"http://localhost:%s":i10,"\xc6"'
+        p = self.pathoc()
+        assert p.request(req%self.server.port).status_code == 400
+