diff --git a/src/layui/layui/MarkerBrowserDialog.ui b/src/layui/layui/MarkerBrowserDialog.ui
index 1a7dc53d0..a65ca1385 100644
--- a/src/layui/layui/MarkerBrowserDialog.ui
+++ b/src/layui/layui/MarkerBrowserDialog.ui
@@ -89,11 +89,17 @@
       <item row="0" column="1">
        <widget class="QComboBox" name="rdb_cb">
         <property name="sizePolicy">
-         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <sizepolicy hsizetype="Ignored" vsizetype="Fixed">
           <horstretch>1</horstretch>
           <verstretch>0</verstretch>
          </sizepolicy>
         </property>
+        <property name="minimumSize">
+         <size>
+          <width>50</width>
+          <height>0</height>
+         </size>
+        </property>
         <property name="sizeAdjustPolicy">
          <enum>QComboBox::AdjustToContentsOnFirstShow</enum>
         </property>
@@ -109,7 +115,7 @@
       <item row="1" column="1">
        <widget class="QComboBox" name="layout_cb">
         <property name="sizePolicy">
-         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <sizepolicy hsizetype="Ignored" vsizetype="Fixed">
           <horstretch>1</horstretch>
           <verstretch>0</verstretch>
          </sizepolicy>
diff --git a/src/layui/layui/NetlistBrowserDialog.ui b/src/layui/layui/NetlistBrowserDialog.ui
index 58babbab9..e55ed99c2 100644
--- a/src/layui/layui/NetlistBrowserDialog.ui
+++ b/src/layui/layui/NetlistBrowserDialog.ui
@@ -72,11 +72,17 @@
       <item row="0" column="1">
        <widget class="QComboBox" name="l2ndb_cb">
         <property name="sizePolicy">
-         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <sizepolicy hsizetype="Ignored" vsizetype="Fixed">
           <horstretch>1</horstretch>
           <verstretch>0</verstretch>
          </sizepolicy>
         </property>
+        <property name="minimumSize">
+         <size>
+          <width>50</width>
+          <height>0</height>
+         </size>
+        </property>
         <property name="sizeAdjustPolicy">
          <enum>QComboBox::AdjustToContentsOnFirstShow</enum>
         </property>
@@ -99,7 +105,7 @@
       <item row="1" column="1">
        <widget class="QComboBox" name="layout_cb">
         <property name="sizePolicy">
-         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <sizepolicy hsizetype="Ignored" vsizetype="Fixed">
           <horstretch>1</horstretch>
           <verstretch>0</verstretch>
          </sizepolicy>