diff --git a/src/mainwindow.ui b/src/mainwindow.ui
index 577576a8..fc0c81d6 100644
--- a/src/mainwindow.ui
+++ b/src/mainwindow.ui
@@ -248,31 +248,15 @@
        <attribute name="title">
         <string>Calc</string>
        </attribute>
-       <layout class="QGridLayout" name="gridLayout_4">
-        <item row="0" column="1">
-         <spacer name="horizontalSpacer_2">
-          <property name="orientation">
-           <enum>Qt::Horizontal</enum>
-          </property>
-          <property name="sizeType">
-           <enum>QSizePolicy::Preferred</enum>
-          </property>
-          <property name="sizeHint" stdset="0">
-           <size>
-            <width>0</width>
-            <height>20</height>
-           </size>
-          </property>
-         </spacer>
-        </item>
-        <item row="0" column="0">
+       <layout class="QVBoxLayout" name="verticalLayout_5">
+        <item>
          <layout class="QHBoxLayout" name="horizontalLayout_2">
           <item>
            <widget class="CalcWidget" name="conversionWidget" native="true"/>
           </item>
          </layout>
         </item>
-        <item row="1" column="1">
+        <item>
          <spacer name="verticalSpacer">
           <property name="orientation">
            <enum>Qt::Vertical</enum>