diff --git a/widgets/mainwindow.ui b/widgets/mainwindow.ui
index 3039c3c64..e49fa35ff 100644
--- a/widgets/mainwindow.ui
+++ b/widgets/mainwindow.ui
@@ -1293,14 +1293,14 @@ When not checked you can view the calibration results.</string>
                       <item>
                        <widget class="QPushButton" name="pbR2T">
                         <property name="sizePolicy">
-                         <sizepolicy hsizetype="Ignored" vsizetype="Fixed">
+                         <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
                           <horstretch>0</horstretch>
                           <verstretch>0</verstretch>
                          </sizepolicy>
                         </property>
                         <property name="minimumSize">
                          <size>
-                          <width>35</width>
+                          <width>15</width>
                           <height>0</height>
                          </size>
                         </property>
@@ -1317,6 +1317,12 @@ When not checked you can view the calibration results.</string>
                       </item>
                       <item>
                        <widget class="HintedSpinBox" name="sbFtol">
+                        <property name="minimumSize">
+                         <size>
+                          <width>80</width>
+                          <height>0</height>
+                         </size>
+                        </property>
                         <property name="toolTip">
                          <string>Frequency tolerance (Hz)</string>
                         </property>
@@ -1340,14 +1346,14 @@ When not checked you can view the calibration results.</string>
                       <item>
                        <widget class="QPushButton" name="pbT2R">
                         <property name="sizePolicy">
-                         <sizepolicy hsizetype="Ignored" vsizetype="Fixed">
+                         <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
                           <horstretch>0</horstretch>
                           <verstretch>0</verstretch>
                          </sizepolicy>
                         </property>
                         <property name="minimumSize">
                          <size>
-                          <width>35</width>
+                          <width>15</width>
                           <height>0</height>
                          </size>
                         </property>