diff --git a/gaft/engine.py b/gaft/engine.py
index d492a30..852c508 100644
--- a/gaft/engine.py
+++ b/gaft/engine.py
@@ -363,6 +363,7 @@ def minimize(self, fn):
         '''
         A decorator for minimizing the fitness function.
         '''
+        @wraps(fn)
         def _minimize(indv):
             return -fn(indv)
         return _minimize