diff --git a/tupak/core/likelihood.py b/tupak/core/likelihood.py
index 34fc9ee83aa92482b9a53f7d3710dbbd5b2dfd16..be17dc09d42916ff2cb7e8dcdba877ca3707449a 100644
--- a/tupak/core/likelihood.py
+++ b/tupak/core/likelihood.py
@@ -80,7 +80,7 @@ class GaussianLikelihood(Likelihood):
             self.parameters['sigma'] = None
 
     @staticmethod
-    def _infer_parameters_from_function(function):
+    def _infer_parameters_from_function(func):
         """ Infers the arguments of function (except the first arg which is
             assumed to be the dep. variable
         """