diff --git a/modules/misc/qt/kconfig.nix b/modules/misc/qt/kconfig.nix
index 22139f5cf..f7c35573b 100644
--- a/modules/misc/qt/kconfig.nix
+++ b/modules/misc/qt/kconfig.nix
@@ -47,7 +47,7 @@ in {
           else if t == "bool" then
             "--type bool ${builtins.toJSON v}"
           else
-            toString v;
+            lib.escapeShellArg (toString v);
         toLine = file: path: value:
           if builtins.isAttrs value then
             lib.mapAttrsToList