diff --git a/slic/utils/opmsg.py b/slic/utils/opmsg.py
index 0cdf769f..dfc75e16 100644
--- a/slic/utils/opmsg.py
+++ b/slic/utils/opmsg.py
@@ -186,7 +186,13 @@ class OperationMessageStatus:
         self.pv_status.put(value)
 
     def get_allowed(self):
-        return self.pv_status.enum_strs
+        # Force le peuplement des ctrlvars (enums, etc.) si possible
+        try:
+            _ = self.pv_status.get_ctrlvars(timeout=1.0)
+        except Exception:
+            pass
+        allowed = getattr(self.pv_status, "enum_strs", None)
+        return allowed or []