diff --git a/ovgenpy/gui/mainwindow.ui b/ovgenpy/gui/mainwindow.ui
index b015911..a0cf67a 100644
--- a/ovgenpy/gui/mainwindow.ui
+++ b/ovgenpy/gui/mainwindow.ui
@@ -277,6 +277,12 @@
           <property name="orientation">
            <enum>Qt::Vertical</enum>
           </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>20</width>
+            <height>40</height>
+           </size>
+          </property>
          </spacer>
         </item>
        </layout>
@@ -345,6 +351,12 @@
           <property name="orientation">
            <enum>Qt::Vertical</enum>
           </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>20</width>
+            <height>40</height>
+           </size>
+          </property>
          </spacer>
         </item>
        </layout>