diff --git a/python/quantum-pecos/src/pecos/qeclib/steane/steane_class.py b/python/quantum-pecos/src/pecos/qeclib/steane/steane_class.py
index 54066918..294d9605 100644
--- a/python/quantum-pecos/src/pecos/qeclib/steane/steane_class.py
+++ b/python/quantum-pecos/src/pecos/qeclib/steane/steane_class.py
@@ -533,8 +533,9 @@ def qec_tel_x(
             If(self.log).Then(aux.x()),
             Permute(self.d, aux.d),
             # update syndromes and pauli frame
-            self.last_raw_syn_z.set(self.syn_meas),
             self.last_raw_syn_x.set(0),
+            self.last_raw_syn_z.set(0),
+            self.syn_z.set(self.syn_meas),
             self.pf_x.set(0),
         )
         if flag_bit is not None:
@@ -557,8 +558,9 @@ def qec_tel_z(
             If(self.log).Then(aux.z()),
             Permute(self.d, aux.d),
             # update syndromes and pauli frame
-            self.last_raw_syn_x.set(self.syn_meas),
+            self.last_raw_syn_x.set(0),
             self.last_raw_syn_z.set(0),
+            self.syn_x.set(self.syn_meas),
             self.pf_z.set(0),
         )
         if flag_bit is not None: