diff --git a/python/pyspark/ml/base.py b/python/pyspark/ml/base.py
index 339e5d6af52a..cb869201ad30 100644
--- a/python/pyspark/ml/base.py
+++ b/python/pyspark/ml/base.py
@@ -59,6 +59,12 @@ def fit(self, dataset, params=None):
             return [self.fit(dataset, paramMap) for paramMap in params]
         elif isinstance(params, dict):
             if params:
+                if isinstance(params.keys()[0],str):
+                    param_new = dict()
+                    for param, value in params.items():
+                        p = getattr(self, param)
+                        param_new.update({p: value})
+                    params=param_new
                 return self.copy(params)._fit(dataset)
             else:
                 return self._fit(dataset)