diff --git a/clearest/core.py b/clearest/core.py
index d5d9a0b..3ac63ac 100644
--- a/clearest/core.py
+++ b/clearest/core.py
@@ -6,14 +6,14 @@
 from copy import deepcopy
 
 try:
-    from urllib.parse import urlparse
+    from urllib.parse import parse_qs
 except ImportError:
-    from urlparse import urlparse
+    from urlparse import parse_qs
 
 import six
 
 from clearest.exceptions import MissingArgumentError, AlreadyRegisteredError, NotUniqueError, HttpError, \
-    HttpNotFound
+    HttpNotFound, NotRootError
 from clearest.http import HTTP_GET, HTTP_POST, CONTENT_TYPE, MIME_TEXT_PLAIN, HTTP_OK
 from clearest.wsgi import REQUEST_METHOD, PATH_INFO, QUERY_STRING
 
@@ -36,7 +36,9 @@ def __hash__(self):
 def parse_path(path):
     if path is None:
         raise TypeError
-    parts = path[1:].split("/") if path.startswith("/") else path.split("/")  # meh
+    elif not path.startswith("/"):
+        raise NotRootError(path)
+    parts = path[1:].split("/")
     for index, part in enumerate(parts):
         found = KEY_PATTERN.match(part)
         if found:
@@ -79,14 +81,22 @@ def is_matching(signature, args, path, query):
     return True
 
 
+def parse_args(args, path, query):
+    kwargs = {}
+    for arg, parse_fn in six.iteritems(args):
+        if parse_fn is None:
+            kwargs[arg] = query[arg][0] if len(query[arg]) == 1 else query[arg]
+    return kwargs
+
+
 def application(environ, start_response):
     try:
         if environ[REQUEST_METHOD] in all_registered():
-            path = tuple(environ[PATH_INFO].split("/"))
-            query = urlparse.parse_qs(environ[QUERY_STRING]) if QUERY_STRING in environ else tuple()
+            path = tuple(environ[PATH_INFO][1:].split("/"))
+            query = parse_qs(environ[QUERY_STRING]) if QUERY_STRING in environ else tuple()
             for signature, (fn, args) in six.iteritems(BaseDecorator.registered[environ[REQUEST_METHOD]]):
                 if is_matching(signature, args, path, query):
-                    result = fn()
+                    result = fn(**parse_args(args, path, query))
                     start_response(STATUS_FMT.format(**HTTP_OK._asdict()),
                                    [(CONTENT_TYPE, MIME_TEXT_PLAIN)])
                     return [result]
@@ -110,7 +120,9 @@ def __call__(self, fn):
         @functools.wraps(fn)
         def wrapped(*args, **kwargs):
             result = fn(*args, **kwargs)
-            wrapped.__dict__ = deepcopy(fn.__dict__)
+            wrapped.__dict__ = deepcopy(fn.__dict__["__wrapped__"].__dict__ if
+                                        "__wrapped__" in fn.__dict__ else
+                                        fn.__dict__)
             return result
 
         registered = BaseDecorator.registered[self.type()]
diff --git a/clearest/exceptions.py b/clearest/exceptions.py
index d5cd6e0..52e003a 100644
--- a/clearest/exceptions.py
+++ b/clearest/exceptions.py
@@ -18,6 +18,11 @@ def __init__(self, var_name):
         super(NotUniqueError, self).__init__("variable {var} is not unique".format(var=var_name))
 
 
+class NotRootError(Exception):
+    def __init__(self, path):
+        super(NotRootError, self).__init__("path is not it the root (change it to /{path})".format(path=path))
+
+
 class HttpError(Exception):
     def __init__(self, code, msg):
         super(HttpError, self).__init__()
diff --git a/requirements.txt b/requirements.txt
index 7a197db..0457bd3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
-six==1.10.0
\ No newline at end of file
+six==1.10.0
+decorator==4.0.9
\ No newline at end of file
diff --git a/tests/test_application.py b/tests/test_application.py
index bb3ba2c..3904fff 100644
--- a/tests/test_application.py
+++ b/tests/test_application.py
@@ -33,6 +33,16 @@ def test_application_simple_query(self):
         def asd():
             return {}
 
-        self.get("asd")
+        self.get("/asd")
+        self.assertEqual(HTTP_OK, self.status)
         self.assertEqual(((), {}), asd.called_with)
+
+    def test_application_simple_var(self):
+        @GET("/asd")
+        @called_with
+        def asd(a):
+            return {}
+
+        self.get("/asd?a=hi")
         self.assertEqual(HTTP_OK, self.status)
+        self.assertEqual((("hi",), {}), asd.called_with)
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
index 3277f6c..e8e2e79 100644
--- a/tests/test_exceptions.py
+++ b/tests/test_exceptions.py
@@ -1,6 +1,6 @@
 from unittest import TestCase
 
-from clearest import GET, MissingArgumentError, AlreadyRegisteredError, NotUniqueError, unregister_all
+from clearest import GET, MissingArgumentError, AlreadyRegisteredError, NotUniqueError, unregister_all, NotRootError
 
 
 class Test(TestCase):
@@ -58,3 +58,11 @@ def asd(a, b):
                 pass
 
         self.assertRaises(NotUniqueError, test_fn)
+
+    def test_not_root(self):
+        def test_fn():
+            @GET("asd")
+            def asd(a, b):
+                pass
+
+        self.assertRaises(NotRootError, test_fn)
diff --git a/tests/util.py b/tests/util.py
index 73f09b4..44184fd 100644
--- a/tests/util.py
+++ b/tests/util.py
@@ -1,10 +1,8 @@
-import functools
+from decorator import decorator
 
 
-def called_with(fn):
-    @functools.wraps(fn)
-    def wrapped(*args, **kwargs):
-        wrapped.called_with = args, kwargs
-        return fn(*args, **kwargs)
-
-    return wrapped
+@decorator
+def called_with(fn, *args, **kwargs):
+    result = fn(*args, **kwargs)
+    fn.called_with = args, kwargs
+    return result