diff --git a/modules/home/programs/gui/phpstorm/default.nix b/modules/home/programs/gui/phpstorm/default.nix
index 48d1359..017e354 100644
--- a/modules/home/programs/gui/phpstorm/default.nix
+++ b/modules/home/programs/gui/phpstorm/default.nix
@@ -9,6 +9,9 @@ in {
   options.marleyos.programs.phpstorm.enable = lib.mkEnableOption "phpstorm";
 
   config = lib.mkIf cfg.enable {
+    # JetBrains products are unfree.
+    nixpkgs.config.allowUnfree = lib.mkForce true;
+
     home.packages = with pkgs; [
       jetbrains.phpstorm
     ];