diff --git a/core_standard.py b/core_standard.py
index a420be2..2e7e425 100644
--- a/core_standard.py
+++ b/core_standard.py
@@ -54,4 +54,4 @@ def inventory(response):
         else:
             raise MalformedDataError('Data content is malformed.')
         tags.append(tag)
-    return tags
+    response.processed_data = tags
diff --git a/models.py b/models.py
index f947429..9bfea4d 100644
--- a/models.py
+++ b/models.py
@@ -306,23 +306,21 @@ class Response():
             raise UnknownResponseErrorType('Unknown type %s'
                 % self.status_type.encode('hex'))
         self.time = None
+        self.processed_data = None
         if self.data:
             self.process_data()
 
     def process_data(self):
-        self.processed_data = None
-        if self.data and self.command.command_name:
+        try:
             core_method_name = self.command.command_name.lower()
-            try:
-                module = None
-                if isinstance(self.command, ReaderCommand):
-                    module = self.command.reader.core
-                else:
-                    module = core_standard
-                core_method = getattr(module, core_method_name)
-                self.processed_data = core_method(self)
-            except Exception, err:
-                pass
+            module = None
+            if isinstance(self.command, ReaderCommand):
+                module = self.command.reader.core
+            else:
+                module = core_standard
+            getattr(module, core_method_name)(self)
+        except Exception, e:
+            pass
 
     def pretty_print(self):
         display = None
diff --git a/stid_readers/core.py b/stid_readers/core.py
index e7d991b..12e3320 100644
--- a/stid_readers/core.py
+++ b/stid_readers/core.py
@@ -47,7 +47,7 @@ def get_rfsettings(response):
         logic_port['PowerAnt'] = (power_ant_nb >> 4) / 10
             #[0E6h ≤ PowerAnt ≤ 136h] soit [23 dBm ≤ PowerAnt ≤ 31 dBm] (URF)
         logic_ports.append(logic_port)
-    return logic_ports
+    response.processed_data = logic_ports
 
 
 def set_rfsettings(command):