diff --git a/pkgs/by-name/im/immich-machine-learning/package.nix b/pkgs/by-name/im/immich-machine-learning/package.nix
index 7d29efca5603..6d46e20d575e 100644
--- a/pkgs/by-name/im/immich-machine-learning/package.nix
+++ b/pkgs/by-name/im/immich-machine-learning/package.nix
@@ -19,9 +19,6 @@ python.pkgs.buildPythonApplication rec {
 
   postPatch = ''
     substituteInPlace pyproject.toml --replace-fail 'fastapi-slim' 'fastapi'
-
-    # AttributeError: module 'cv2' has no attribute 'Mat'
-    substituteInPlace app/test_main.py --replace-fail ": cv2.Mat" ""
   '';
 
   pythonRelaxDeps = [