diff --git a/default.nix b/default.nix
index 58dbe52..3b6618a 100644
--- a/default.nix
+++ b/default.nix
@@ -35,16 +35,15 @@ let
     pname = "mindvision-camera-sdk";
     version = "2.1.0.49";
     
-    # Reference the tar.gz file from the camera_sdk directory
-    src = pkgs.runCommand "camera-sdk-source" {} ''
-      cp ${./usda-vision/camera-management-api/camera_sdk}/"linuxSDK_V2.1.0.49(250108).tar.gz" $out
-    '';
+    # Use the camera_sdk directory as source
+    src = ./usda-vision/camera-management-api/camera_sdk;
     
     nativeBuildInputs = [ pkgs.makeWrapper ];
     buildInputs = [ pkgs.libusb1 ];
     
     unpackPhase = ''
-      tar xzf $src
+      cp -r $src/* .
+      tar xzf "linuxSDK_V2.1.0.49(250108).tar.gz"
       cd "linuxSDK_V2.1.0.49(250108)"
     '';