diff --git a/src/pg/sql/11_markov.sql b/src/pg/sql/11_markov.sql
index af5f8c8..1124abd 100644
--- a/src/pg/sql/11_markov.sql
+++ b/src/pg/sql/11_markov.sql
@@ -21,7 +21,6 @@ CREATE OR REPLACE FUNCTION
   	  id_col TEXT DEFAULT 'cartodb_id')
 RETURNS TABLE (trend NUMERIC, trend_up NUMERIC, trend_down NUMERIC, volatility NUMERIC, rowid INT)
 AS $$
-  plpy.execute('SELECT cdb_crankshaft._cdb_crankshaft_activate_py()')
 
   from crankshaft.space_time_dynamics import spatial_markov_trend
 
diff --git a/src/pg/test/sql/05_markov_test.sql b/src/pg/test/sql/05_markov_test.sql
index ad2e053..46b1422 100644
--- a/src/pg/test/sql/05_markov_test.sql
+++ b/src/pg/test/sql/05_markov_test.sql
@@ -10,21 +10,21 @@ SELECT cdb_crankshaft._cdb_random_seeds(1234);
 
 SELECT
   m1.cartodb_id,
-  CASE WHEN m1.cartodb_id = 1 THEN (m2.trend - 0.0714285714286) / 0.0714285714286 < 0.01
-       WHEN m1.cartodb_id = 2 THEN (m2.trend - 0.222222222222) / 0.222222222222  < 0.01
-       WHEN m1.cartodb_id = 3 THEN (m2.trend - 0.0526315789474) / 0.0526315789474  < 0.01
+  CASE WHEN m1.cartodb_id = 1 THEN abs(m2.trend - 0.0714285714286) / 0.0714285714286 < 0.05
+       WHEN m1.cartodb_id = 2 THEN abs(m2.trend - 0.222222222222) / 0.222222222222  < 0.05
+       WHEN m1.cartodb_id = 3 THEN abs(m2.trend - 0.0526315789474) / 0.0526315789474  < 0.05
        ELSE NULL END As trend_test,
-  CASE WHEN m1.cartodb_id = 1 THEN (m2.trend_up - 0.0666666666667) / 0.0666666666667  < 0.01
-       WHEN m1.cartodb_id = 2 THEN (m2.trend_up - 0.181818181818) / 0.181818181818  < 0.01
-       WHEN m1.cartodb_id = 3 THEN (m2.trend_up - 0.05) / 0.05  < 0.01
+  CASE WHEN m1.cartodb_id = 1 THEN abs(m2.trend_up - 0.0666666666667) / 0.0666666666667  < 0.05
+       WHEN m1.cartodb_id = 2 THEN abs(m2.trend_up - 0.181818181818) / 0.181818181818  < 0.05
+       WHEN m1.cartodb_id = 3 THEN abs(m2.trend_up - 0.05) / 0.05  < 0.05
        ELSE NULL END As trend_up_test,
   CASE WHEN m1.cartodb_id = 1 THEN m2.trend_down = 0.0
        WHEN m1.cartodb_id = 2 THEN m2.trend_down = 0.0
        WHEN m1.cartodb_id = 3 THEN m2.trend_down = 0.0
        ELSE NULL END As trend_down_test,
-  CASE WHEN m1.cartodb_id = 1 THEN (m2.volatility - 0.367574633389) / 0.367574633389  < 0.1
-       WHEN m1.cartodb_id = 2 THEN (m2.volatility - 0.317010832258) / 0.317010832258  < 0.1
-       WHEN m1.cartodb_id = 3 THEN (m2.volatility - 0.37549966711) / 0.37549966711  < 0.1
+  CASE WHEN m1.cartodb_id = 1 THEN abs(m2.volatility - 0.367574633389) / 0.367574633389  < 0.1
+       WHEN m1.cartodb_id = 2 THEN abs(m2.volatility - 0.317010832258) / 0.317010832258  < 0.1
+       WHEN m1.cartodb_id = 3 THEN abs(m2.volatility - 0.37549966711) / 0.37549966711  < 0.1
        ELSE NULL END As volatility_test
   FROM markov_usjoin_example As m1
   JOIN cdb_crankshaft.CDB_SpatialMarkovTrend('SELECT * FROM markov_usjoin_example ORDER BY cartodb_id DESC', Array['y1995', 'y1996', 'y1997', 'y1998', 'y1999', 'y2000', 'y2001', 'y2002', 'y2003', 'y2004', 'y2005', 'y2006', 'y2007', 'y2008', 'y2009']::text[], 5::int, 'knn'::text, 5::int, 0::int, 'the_geom'::text, 'cartodb_id'::text) As m2
diff --git a/src/py/crankshaft/crankshaft/space_time_dynamics/__init__.py b/src/py/crankshaft/crankshaft/space_time_dynamics/__init__.py
index a9810a7..a439286 100644
--- a/src/py/crankshaft/crankshaft/space_time_dynamics/__init__.py
+++ b/src/py/crankshaft/crankshaft/space_time_dynamics/__init__.py
@@ -1,2 +1,2 @@
 """Import all functions from clustering libraries."""
-from crankshaft.space_time_dynamics.markov import *
+from markov import *