diff --git a/IPython/core/inputsplitter.py b/IPython/core/inputsplitter.py
index b515d38..555f361 100644
--- a/IPython/core/inputsplitter.py
+++ b/IPython/core/inputsplitter.py
@@ -477,7 +477,7 @@ class IPythonInputSplitter(InputSplitter):
     # List with lines of raw input accumulated so far.
     _buffer_raw = None
 
-    def __init__(self, line_input_checker=False, physical_line_transforms=None,
+    def __init__(self, line_input_checker=True, physical_line_transforms=None,
                     logical_line_transforms=None, python_line_transforms=None):
         super(IPythonInputSplitter, self).__init__()
         self._buffer_raw = []