diff --git a/itk-snap.nix b/itk-snap.nix
index ff0da61..50d848f 100644
--- a/itk-snap.nix
+++ b/itk-snap.nix
@@ -23,11 +23,7 @@ stdenv.mkDerivation {
     qt6.wrapQtAppsHook
   ];
   buildInputs = [
-    (itk.overrideAttrs (
-      finalAttrs: previousAttrs: {
-        cmakeFlags = previousAttrs.cmakeFlags ++ [ "-DModule_MorphologicalContourInterpolation=ON" ];
-      }
-    ))
+    itk
     vtk
     qt6.qtbase
   ];