diff --git a/pkgs/by-name/we/wechat-uos/package.nix b/pkgs/by-name/we/wechat-uos/package.nix
index 63b47dde8500..de9ce6480b19 100644
--- a/pkgs/by-name/we/wechat-uos/package.nix
+++ b/pkgs/by-name/we/wechat-uos/package.nix
@@ -272,6 +272,7 @@ buildFHSEnv {
   inherit (wechat) name meta;
   runScript = writeShellScript "wechat-uos-launcher" ''
     export QT_QPA_PLATFORM=xcb
+    export QT_AUTO_SCREEN_SCALE_FACTOR=1
     export LD_LIBRARY_PATH=${lib.makeLibraryPath wechat-uos-runtime}
 
     if [[ ''${XMODIFIERS} =~ fcitx ]]; then