diff --git a/km3io/offline.py b/km3io/offline.py
index 77426fdd1d34fe2c11a45b2c1f020d8f6c609445..1c174f8b7c4e3c2785bd57a4bae6471b55bd547c 100644
--- a/km3io/offline.py
+++ b/km3io/offline.py
@@ -178,7 +178,8 @@ class OfflineKeys:
             list of all "trks.fitinf" keys.
         """
         if self._fit_keys is None:
-            self._fit_keys = [*self.fitparameters.keys()]
+            self._fit_keys = sorted(self.fitparameters, key=self.fitparameters.get, reverse=False)
+            # self._fit_keys = [*fit.keys()]
         return self._fit_keys
 
     @property