diff --git a/autosklearn/estimators.py b/autosklearn/estimators.py
index e53942f893..3977588db9 100644
--- a/autosklearn/estimators.py
+++ b/autosklearn/estimators.py
@@ -339,7 +339,7 @@ def fit_ensemble(self, y, task=None, metric=None, precision='32',
             introduced in `Getting Most out of Ensemble Selection`.
 
         ensemble_size : int
-            Size of the ensemble built by `Ensomble Selection`.
+            Size of the ensemble built by `Ensemble Selection`.
 
         Returns
         -------