diff --git a/pkgs/by-name/lg/lgogdownloader/package.nix b/pkgs/by-name/lg/lgogdownloader/package.nix
index da559b62daaa..3a21661f4ee7 100644
--- a/pkgs/by-name/lg/lgogdownloader/package.nix
+++ b/pkgs/by-name/lg/lgogdownloader/package.nix
@@ -63,7 +63,9 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "lgogdownloader";
     homepage = "https://github.com/Sude-/lgogdownloader";
     license = lib.licenses.wtfpl;
+    # qtbase requires a sandbox profile with read access to /usr/share/icu.
+    # To prevent build failures in CI, we disable Darwin support when the GUI is enabled.
+    platforms = lib.platforms.linux ++ lib.optionals (!enableGui) lib.platforms.darwin;
     maintainers = with lib.maintainers; [ _0x4A6F ];
-    platforms = lib.platforms.linux;
   };
 })