diff --git a/pkgs/applications/science/misc/root/default.nix b/pkgs/applications/science/misc/root/default.nix
index 8ba05dc24436..59bb9415b37d 100644
--- a/pkgs/applications/science/misc/root/default.nix
+++ b/pkgs/applications/science/misc/root/default.nix
@@ -189,7 +189,6 @@ stdenv.mkDerivation rec {
   ++ lib.optional (stdenv.cc.libc != null) "-DC_INCLUDE_DIRS=${lib.getDev stdenv.cc.libc}/include"
   ++ lib.optionals stdenv.isDarwin [
     "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks"
-    "-DCMAKE_DISABLE_FIND_PACKAGE_Python2=TRUE"
 
     # fatal error: module map file '/nix/store/<hash>-Libsystem-osx-10.12.6/include/module.modulemap' not found
     # fatal error: could not build module '_Builtin_intrinsics'