diff --git a/deap/algorithms.py b/deap/algorithms.py
index 4105fefd3..c327046f6 100644
--- a/deap/algorithms.py
+++ b/deap/algorithms.py
@@ -467,6 +467,11 @@ def eaGenerateUpdate(toolbox, ngen, halloffame=None, stats=None,
             evaluate(population)
             toolbox.update(population)
 
+
+    This function expects :meth:`toolbox.generate` and :meth:`toolbox.evaluate` aliases to be
+    registered in the toolbox.
+    variation.
+    
     .. [Colette2010] Collette, Y., N. Hansen, G. Pujol, D. Salazar Aponte and
        R. Le Riche (2010). On Object-Oriented Programming of Optimizers -
        Examples in Scilab. In P. Breitkopf and R. F. Coelho, eds.: