diff --git a/doc/source/whatsnew/v0.18.0.txt b/doc/source/whatsnew/v0.18.0.txt
index a534c3ec0017a..de5439885a6a7 100644
--- a/doc/source/whatsnew/v0.18.0.txt
+++ b/doc/source/whatsnew/v0.18.0.txt
@@ -92,7 +92,7 @@ In addition, ``.round()`` will be available thru the ``.dt`` accessor of ``Serie
 Backwards incompatible API changes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-- The parameter ``out`` has been removed from the ``Series.round()`` method. (:issue:`11763`) 
+- The parameter ``out`` has been removed from the ``Series.round()`` method. (:issue:`11763`)
 
 Bug in QuarterBegin with n=0
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -189,7 +189,7 @@ Bug Fixes
 
 - Bug in ``GroupBy.size`` when data-frame is empty. (:issue:`11699`)
 - Bug in ``Period.end_time`` when a multiple of time period is requested (:issue:`11738`)
-
+- Regression in ``.clip`` with tz-aware datetimes (:issue:`11838`)
 
 
 
diff --git a/pandas/core/internals.py b/pandas/core/internals.py
index bf63e9a3cab45..123dca9f3ee5c 100644
--- a/pandas/core/internals.py
+++ b/pandas/core/internals.py
@@ -1215,10 +1215,6 @@ def func(cond, values, other):
         result = func(cond, values, other)
         if self._can_hold_na or self.ndim == 1:
 
-            if not isinstance(result, np.ndarray):
-                raise TypeError('Could not compare [%s] with block values'
-                                % repr(other))
-
             if transpose:
                 result = result.T
 
diff --git a/pandas/tests/test_series.py b/pandas/tests/test_series.py
index 34d2d0de35977..099e86a44d188 100644
--- a/pandas/tests/test_series.py
+++ b/pandas/tests/test_series.py
@@ -3008,16 +3008,16 @@ def test_round(self):
                           name='ts')
         assert_series_equal(result, expected)
         self.assertEqual(result.name, self.ts.name)
-         
+
     def test_built_in_round(self):
         if not compat.PY3:
             raise nose.SkipTest('build in round cannot be overriden prior to Python 3')
-        
+
         s = Series([1.123, 2.123, 3.123], index=lrange(3))
         result = round(s)
         expected_rounded0 = Series([1., 2., 3.], index=lrange(3))
         self.assert_series_equal(result, expected_rounded0)
-        
+
         decimals = 2
         expected_rounded = Series([1.12, 2.12, 3.12], index=lrange(3))
         result = round(s, decimals)
@@ -5844,6 +5844,24 @@ def test_clip_against_series(self):
         assert_series_equal(s.clip(lower, upper), Series([1.0, 2.0, 3.5]))
         assert_series_equal(s.clip(1.5, upper), Series([1.5, 1.5, 3.5]))
 
+
+    def test_clip_with_datetimes(self):
+
+        # GH 11838
+        # naive and tz-aware datetimes
+
+        t = Timestamp('2015-12-01 09:30:30')
+        s = Series([ Timestamp('2015-12-01 09:30:00'), Timestamp('2015-12-01 09:31:00') ])
+        result = s.clip(upper=t)
+        expected = Series([ Timestamp('2015-12-01 09:30:00'), Timestamp('2015-12-01 09:30:30') ])
+        assert_series_equal(result, expected)
+
+        t = Timestamp('2015-12-01 09:30:30', tz='US/Eastern')
+        s = Series([ Timestamp('2015-12-01 09:30:00', tz='US/Eastern'), Timestamp('2015-12-01 09:31:00', tz='US/Eastern') ])
+        result = s.clip(upper=t)
+        expected = Series([ Timestamp('2015-12-01 09:30:00', tz='US/Eastern'), Timestamp('2015-12-01 09:30:30', tz='US/Eastern') ])
+        assert_series_equal(result, expected)
+
     def test_valid(self):
         ts = self.ts.copy()
         ts[::2] = np.NaN