diff --git a/hannah/nas/search/sampler/mutator.py b/hannah/nas/search/sampler/mutator.py
index f3243221..cff5846d 100644
--- a/hannah/nas/search/sampler/mutator.py
+++ b/hannah/nas/search/sampler/mutator.py
@@ -23,6 +23,8 @@ def mutate(self, parameters):
             if num in mutation_indices:
                 parametrization[key] = self.mutate_parameter(param)
                 mutated_keys.append(key)
+            else:
+                parametrization[key] = param.current_value
 
         return parametrization, mutated_keys