diff --git a/build-aux/windows/QElectroTech.wxs b/build-aux/windows/QElectroTech.wxs
index c0cbaec82..4f6f62c22 100644
--- a/build-aux/windows/QElectroTech.wxs
+++ b/build-aux/windows/QElectroTech.wxs
@@ -103,9 +103,10 @@
     </Feature>
 
     <!-- WixUI_Minimal with QElectroTech GPL-2 license -->
-    <ui:WixUI Id="WixUI_Minimal">
-      <ui:WixVariable Id="WixUILicenseRtf" Value="$(var.LicenseRtf)" />
-    </ui:WixUI>
+    <ui:WixUI Id="WixUI_Minimal" />
+
+    <!-- WixVariable must be at Package level, not inside WixUI -->
+    <ui:WixVariable Id="WixUILicenseRtf" Value="$(var.LicenseRtf)" />
 
     <!-- Properties shown in Programs and Features -->
     <Property Id="ARPPRODUCTICON" Value="qet.ico" />