diff --git a/pkgs/by-name/ko/koboldcpp/package.nix b/pkgs/by-name/ko/koboldcpp/package.nix
index ba67339e9266..68dfe8237d70 100644
--- a/pkgs/by-name/ko/koboldcpp/package.nix
+++ b/pkgs/by-name/ko/koboldcpp/package.nix
@@ -24,7 +24,7 @@
   clblast,
   ocl-icd,
 
-  vulkanSupport ? true,
+  vulkanSupport ? (!stdenv.hostPlatform.isDarwin),
   vulkan-loader,
   metalSupport ? stdenv.hostPlatform.isDarwin,
   nix-update-script,