Index: Theano-1.0.5/theano/scalar/basic.py
===================================================================
--- Theano-1.0.5.orig/theano/scalar/basic.py
+++ Theano-1.0.5/theano/scalar/basic.py
@@ -2367,7 +2367,6 @@ class Cast(UnaryScalarOp):
         else:
             return s
 
-convert_to_bool = Cast(bool, name='convert_to_bool')
 convert_to_int8 = Cast(int8, name='convert_to_int8')
 convert_to_int16 = Cast(int16, name='convert_to_int16')
 convert_to_int32 = Cast(int32, name='convert_to_int32')
@@ -2383,7 +2382,6 @@ convert_to_complex64 = Cast(complex64, n
 convert_to_complex128 = Cast(complex128, name='convert_to_complex128')
 
 _cast_mapping = {
-    'bool': convert_to_bool,
     'int8': convert_to_int8,
     'int16': convert_to_int16,
     'int32': convert_to_int32,
Index: Theano-1.0.5/theano/tensor/basic.py
===================================================================
--- Theano-1.0.5.orig/theano/tensor/basic.py
+++ Theano-1.0.5/theano/tensor/basic.py
@@ -1177,10 +1177,6 @@ def _conversion(real_value, name):
 # what types you are casting to what.  That logic is implemented by the
 # `cast()` function below.
 
-_convert_to_bool = _conversion(
-    elemwise.Elemwise(scal.convert_to_bool), 'bool')
-"""Cast to boolean"""
-
 _convert_to_int8 = _conversion(
     elemwise.Elemwise(scal.convert_to_int8), 'int8')
 """Cast to 8-bit integer"""
@@ -1234,7 +1230,6 @@ _convert_to_complex128 = _conversion(
 """Cast to double-precision complex"""
 
 _cast_mapping = {
-    'bool': _convert_to_bool,
     'int8': _convert_to_int8,
     'int16': _convert_to_int16,
     'int32': _convert_to_int32,