diff --git a/sklearn/ensemble/gradient_boosting.py b/sklearn/ensemble/gradient_boosting.py
index baa0d7b0aebbdb894d78b8a33b2223bb0afcface..e725d2e6ebe812dc34c3a4446e912c2a38ddddb0 100644
--- a/sklearn/ensemble/gradient_boosting.py
+++ b/sklearn/ensemble/gradient_boosting.py
@@ -1526,7 +1526,7 @@ class GradientBoostingClassifier(BaseGradientBoosting, ClassifierMixin):
 
         Returns
         -------
-        y : array of shape = ["n_samples]
+        y : array of shape = [n_samples]
             The predicted values.
         """
         score = self.decision_function(X)