diff --git a/integrators/tps2.py b/integrators/tps2.py
index 1981cd7f4edd78b9fc04b5c68bf10de3b8c8ffef..19baab4b25476674382c402edc553573cc2a2c18 100644
--- a/integrators/tps2.py
+++ b/integrators/tps2.py
@@ -234,7 +234,6 @@ class TPS2(_tpsx.TPSX, \
       self._Assemble_f_iter()
       f = self._f_fix.vec.FV().NumPy() + self._f_iter.vec.FV().NumPy()
 
-      self._Compute_Q()
       LHS = self._Q.dot( A.dot( self._Q.transpose() ) ) 
       RHS = self._Q.dot( f )