diff --git a/tree/.xprofile.tpl b/tree/.xprofile.tpl
new file mode 100644
index 0000000..cb94915
--- /dev/null
+++ b/tree/.xprofile.tpl
@@ -0,0 +1,4 @@
+{% if hostname == "sputnik" %}
+# use qt5ct to set Qt theme
+export QT_QPA_PLATFORMTHEME=qt5ct
+{% end %}