diff --git a/README.rst b/README.rst
index 294686f..2de7d00 100644
--- a/README.rst
+++ b/README.rst
@@ -68,7 +68,7 @@ The mapper takes a list of pairs. The first is a column name from the pandas Dat
     ...     (['children'], sklearn.preprocessing.StandardScaler())
     ... ])
 
-The difference between specifying the column selector as ``'column'`` (as a simple string) and ``['column']`` (as a list with one element) is the shape of the array that is passed to the transformer. In the first case, a one dimensional array with be passed, while in the second case it will be a 2-dimensional array with one column, i.e. a column vector.
+The difference between specifying the column selector as ``'column'`` (as a simple string) and ``['column']`` (as a list with one element) is the shape of the array that is passed to the transformer. In the first case, a one dimensional array will be passed, while in the second case it will be a 2-dimensional array with one column, i.e. a column vector.
 
 This behaviour mimics the same pattern as pandas' dataframes ``__getitem__``  indexing: