diff --git a/shell.nix b/shell.nix
index b04b53a..65f3a06 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,30 +5,28 @@
 # https://github.com/NixOS/nixpkgs/issues/166220#issuecomment-1745803058
 
 {
-  ### Import with nix channels ###
+  ### Import nixpkgs as channels ###
   #
-  # NixOS stable
+  # nixpkgs stable
   #pkgs ? import <nixpkgs> {
+  #   # Required for IntelliJ Ultimate
   #   config.allowUnfree = true;
   #},
-  # NixOS unstable
-  #unstable ? import <unstable> {
-  #   config.allowUnfree = true;
-  #}
+  # nixpkgs unstable
+  #unstable ? import <unstable> { }
 }:
 
 let
-  ### Import with Niv ###
+  ### Import nixpkgs with Niv ###
   #
   sources = import ./nix/sources.nix;
-  # NixOS stable
+  # nixpkgs stable
   pkgs = import sources.nixpkgs {
+    # Required for IntelliJ Ultimate
     config.allowUnfree = true;
   };
-  # NixOS unstable
-  unstable = import sources.unstable {
-    config.allowUnfree = true;
-  };
+  # nixpkgs unstable
+  unstable = import sources.unstable { };
 
   jdk = unstable.jdk23;
   gradle = unstable.gradle.override {