diff --git a/integrators/tps2.py b/integrators/tps2.py
index 4eb0f193aa20f995d90514ad786981e5cf2a3dac..1981cd7f4edd78b9fc04b5c68bf10de3b8c8ffef 100644
--- a/integrators/tps2.py
+++ b/integrators/tps2.py
@@ -220,8 +220,6 @@ class TPS2(_tpsx.TPSX, \
       self._Mag.v.hs.SetZero()
     
     # assemble blf and lf
-    self._Assemble_A_instat()
-    
     A = self._A_stat + self._A_instat
     
     itnr = 0