diff --git a/Configuration.cpp b/Configuration.cpp
index c1e84815b..7f6e3610f 100644
--- a/Configuration.cpp
+++ b/Configuration.cpp
@@ -538,7 +538,6 @@ private:
   bool decode_at_52s_;
   bool single_decode_;
   bool twoPass_;
-  bool sync1Bit_;
   bool x2ToneSpacing_;
   bool offsetRxFreq_;
   QString udp_server_name_;
@@ -624,7 +623,6 @@ bool Configuration::enable_VHF_features () const {return m_->enable_VHF_features
 bool Configuration::decode_at_52s () const {return m_->decode_at_52s_;}
 bool Configuration::single_decode () const {return m_->single_decode_;}
 bool Configuration::twoPass() const {return m_->twoPass_;}
-bool Configuration::sync1Bit() const {return m_->sync1Bit_;}
 bool Configuration::x2ToneSpacing() const {return m_->x2ToneSpacing_;}
 bool Configuration::offsetRxFreq () const {return m_->offsetRxFreq_;}
 bool Configuration::split_mode () const {return m_->split_mode ();}
@@ -1051,7 +1049,6 @@ void Configuration::impl::initialize_models ()
   ui_->decode_at_52s_check_box->setChecked(decode_at_52s_);
   ui_->single_decode_check_box->setChecked(single_decode_);
   ui_->cbTwoPass->setChecked(twoPass_);
-  ui_->cbSync1Bit->setChecked(sync1Bit_);
   ui_->cbx2ToneSpacing->setChecked(x2ToneSpacing_);
   ui_->offset_Rx_freq_check_box->setChecked(offsetRxFreq_);
   ui_->type_2_msg_gen_combo_box->setCurrentIndex (type_2_msg_gen_);
@@ -1276,7 +1273,6 @@ void Configuration::impl::read_settings ()
   decode_at_52s_ = settings_->value("Decode52",false).toBool ();
   single_decode_ = settings_->value("SingleDecode",false).toBool ();
   twoPass_ = settings_->value("TwoPass",true).toBool ();
-  sync1Bit_ = settings_->value("Sync1Bit",false).toBool ();
   x2ToneSpacing_ = settings_->value("x2ToneSpacing",false).toBool ();
   offsetRxFreq_ = settings_->value("OffsetRx",false).toBool();
   rig_params_.poll_interval = settings_->value ("Polling", 0).toInt ();
@@ -1373,7 +1369,6 @@ void Configuration::impl::write_settings ()
   settings_->setValue ("Decode52", decode_at_52s_);
   settings_->setValue ("SingleDecode", single_decode_);
   settings_->setValue ("TwoPass", twoPass_);
-  settings_->setValue ("Sync1Bit", sync1Bit_);
   settings_->setValue ("x2ToneSpacing", x2ToneSpacing_);
   settings_->setValue("OffsetRx",offsetRxFreq_);
   settings_->setValue ("UDPServer", udp_server_name_);
@@ -1766,7 +1761,6 @@ void Configuration::impl::accept ()
   decode_at_52s_ = ui_->decode_at_52s_check_box->isChecked ();
   single_decode_ = ui_->single_decode_check_box->isChecked ();
   twoPass_ = ui_->cbTwoPass->isChecked ();
-  sync1Bit_ = ui_->cbSync1Bit->isChecked ();
   x2ToneSpacing_ = ui_->cbx2ToneSpacing->isChecked ();
   offsetRxFreq_ = ui_->offset_Rx_freq_check_box->isChecked();
   frequency_calibration_intercept_ = ui_->calibration_intercept_spin_box->value ();
diff --git a/Configuration.hpp b/Configuration.hpp
index 91269bad5..1edee9aef 100644
--- a/Configuration.hpp
+++ b/Configuration.hpp
@@ -121,7 +121,6 @@ public:
   bool decode_at_52s () const;
   bool single_decode () const;
   bool twoPass() const;
-  bool sync1Bit() const;
   bool x2ToneSpacing() const;
   bool MyDx() const;
   bool CQMyN() const;
diff --git a/Configuration.ui b/Configuration.ui
index 7750ae452..e5663635e 100644
--- a/Configuration.ui
+++ b/Configuration.ui
@@ -2295,6 +2295,9 @@ Right click for insert and delete options.</string>
          <layout class="QFormLayout" name="formLayout_11">
           <item row="0" column="1">
            <layout class="QFormLayout" name="formLayout_2">
+            <property name="fieldGrowthPolicy">
+             <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
+            </property>
             <item row="0" column="0">
              <widget class="QLabel" name="label_2">
               <property name="text">
@@ -2342,16 +2345,6 @@ Right click for insert and delete options.</string>
              </widget>
             </item>
             <item row="2" column="0">
-             <widget class="QCheckBox" name="cbSync1Bit">
-              <property name="text">
-               <string>Robust sync</string>
-              </property>
-              <property name="checked">
-               <bool>true</bool>
-              </property>
-             </widget>
-            </item>
-            <item row="3" column="0">
              <widget class="QCheckBox" name="cbTwoPass">
               <property name="text">
                <string>Two-pass decoding</string>
@@ -2463,7 +2456,6 @@ soundcard changes</string>
   <tabstop>pbNewDXCC</tabstop>
   <tabstop>pbNewCall</tabstop>
   <tabstop>sbNtrials</tabstop>
-  <tabstop>cbSync1Bit</tabstop>
   <tabstop>cbTwoPass</tabstop>
   <tabstop>sbDegrade</tabstop>
  </tabstops>
@@ -2535,12 +2527,12 @@ soundcard changes</string>
   </connection>
  </connections>
  <buttongroups>
-  <buttongroup name="TX_audio_source_button_group"/>
-  <buttongroup name="TX_mode_button_group"/>
-  <buttongroup name="split_mode_button_group"/>
-  <buttongroup name="PTT_method_button_group"/>
   <buttongroup name="CAT_stop_bits_button_group"/>
   <buttongroup name="CAT_handshake_button_group"/>
   <buttongroup name="CAT_data_bits_button_group"/>
+  <buttongroup name="TX_mode_button_group"/>
+  <buttongroup name="split_mode_button_group"/>
+  <buttongroup name="PTT_method_button_group"/>
+  <buttongroup name="TX_audio_source_button_group"/>
  </buttongroups>
 </ui>
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 4cf089a16..1756bfd8d 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -2122,7 +2122,6 @@ void MainWindow::decode()                                       //decode()
   dec_data.params.nranera=m_config.ntrials();
   dec_data.params.naggressive=m_config.aggressive();
   dec_data.params.nrobust=0;
-  if(m_config.sync1Bit()) dec_data.params.nrobust=1;
   dec_data.params.ndiskdat=0;
   if(m_diskData) dec_data.params.ndiskdat=1;
   dec_data.params.nfa=m_wideGraph->nStartFreq();