diff --git a/halfapi/lib/acl.py b/halfapi/lib/acl.py
index 4af7e14..9397d81 100644
--- a/halfapi/lib/acl.py
+++ b/halfapi/lib/acl.py
@@ -51,9 +51,9 @@ def args_check(fct):
 
         data_ = {}
         if req.method == 'GET':
-            data_ = req.query_params
+            data_ = dict(req.query_params)
 
-        if req.method in ['POST', 'PATCH', 'PUT', 'DELETE']:
+        elif req.method in ['POST', 'PATCH', 'PUT', 'DELETE']:
             try:
                 data_ = await req.json()
             except JSONDecodeError as exc:
diff --git a/halfapi/lib/constants.py b/halfapi/lib/constants.py
index 294fec9..fa75ae1 100644
--- a/halfapi/lib/constants.py
+++ b/halfapi/lib/constants.py
@@ -3,7 +3,7 @@ from schema import Schema, Optional
 VERBS = ('GET', 'POST', 'PUT', 'PATCH', 'DELETE')
 
 ACLS_SCHEMA = Schema([{
-    'acl': str,
+    'acl': lambda fct: isinstance(fct(), bool),
     Optional('args'): {
         Optional('required'): { str },
         Optional('optional'): { str }
diff --git a/halfapi/lib/routes.py b/halfapi/lib/routes.py
index 62df443..4589d11 100644
--- a/halfapi/lib/routes.py
+++ b/halfapi/lib/routes.py
@@ -21,6 +21,7 @@ import yaml
 
 from .domain import gen_router_routes, domain_acls, route_decorator
 from .responses import ORJSONResponse
+from .acl import args_check
 from ..half_route import HalfRoute
 from ..conf import DOMAINSDICT
 
@@ -75,7 +76,7 @@ def gen_schema_routes(schema: Dict):
             if not inspect.iscoroutinefunction(fct):
                 yield HalfRoute(path, route_decorator(fct), acls, verb)
             else:
-                yield HalfRoute(path, fct, acls, verb)
+                yield HalfRoute(path, args_check(fct), acls, verb)
 
 
 def gen_starlette_routes(d_domains: Dict[str, ModuleType]) -> Generator: