diff --git a/python/pyspark/ml/evaluation.py b/python/pyspark/ml/evaluation.py
index 23c37167b37118d9ac5167d4064e9c01cf4af9e4..d8ddb78c6d639ca8ee27b15e9dc1f27b3aa1adaa 100644
--- a/python/pyspark/ml/evaluation.py
+++ b/python/pyspark/ml/evaluation.py
@@ -205,7 +205,7 @@ class RegressionEvaluator(JavaEvaluator, HasLabelCol, HasPredictionCol):
     def setParams(self, predictionCol="prediction", labelCol="label",
                   metricName="rmse"):
         """
-        setParams(self, predictionCol="prediction", labelCol="label",
+        setParams(self, predictionCol="prediction", labelCol="label", \
                   metricName="rmse")
         Sets params for regression evaluator.
         """