diff --git a/addons/katebuild-plugin/build.ui b/addons/katebuild-plugin/build.ui
--- a/addons/katebuild-plugin/build.ui
+++ b/addons/katebuild-plugin/build.ui
@@ -143,6 +143,9 @@
            <verstretch>1</verstretch>
           </sizepolicy>
          </property>
+         <property name="layoutDirection">
+          <enum>Qt::LeftToRight</enum>
+         </property>
          <property name="autoScroll">
           <bool>false</bool>
          </property>