diff --git a/pyjecteur/lights.py b/pyjecteur/lights.py
index 112d1a3..fef42e3 100644
--- a/pyjecteur/lights.py
+++ b/pyjecteur/lights.py
@@ -69,18 +69,19 @@ class AbstractLight:
         self._enable_auto_update: bool = False
 
         for key, rValueObject in self.__class__.__dict__.items():
-            # On copie la valeur
-            val = deepcopy(rValueObject.value)
-            if isinstance(val, ReactiveMixin):
-                val.light = self
-                val.key = key
-            self._attrs_to_dmx[key] = rValueObject.attr_to_dmx()
+            if isinstance(rValueObject, BaseReactiveValue):
+                # On copie la valeur
+                val = deepcopy(rValueObject.value)
+                if isinstance(val, ReactiveMixin):
+                    val.light = self
+                    val.key = key
+                self._attrs_to_dmx[key] = rValueObject.attr_to_dmx()
 
-            for i, length, callback in rValueObject.dmx_to_attr():
-                for k in range(i, i + length):
-                    self._dmx_to_attrs[k] = (key, i, length, callback)
-            # Finally set the attributes to their value
-            setattr(self, key, val)
+                for i, length, callback in rValueObject.dmx_to_attr():
+                    for k in range(i, i + length):
+                        self._dmx_to_attrs[k] = (key, i, length, callback)
+                # Finally set the attributes to their value
+                setattr(self, key, val)
         self._enable_auto_update: bool = True
 
     def register_universe(self, universe: "Universe") -> None: