diff --git a/var/spack/repos/builtin/packages/dd4hep/package.py b/var/spack/repos/builtin/packages/dd4hep/package.py
index b63fa088b90..1eab86c81e3 100644
--- a/var/spack/repos/builtin/packages/dd4hep/package.py
+++ b/var/spack/repos/builtin/packages/dd4hep/package.py
@@ -43,5 +43,6 @@ def cmake_args(self):
             "-DBUILD_TESTING={0}".format(spec.satisfies('+testing')),
             "-DBOOST_ROOT={0}".format(spec['boost'].prefix),
             "-DBoost_NO_BOOST_CMAKE=ON",
+            "-DPYTHON_EXECUTABLE={0}".format(spec['python'].command.path),
         ]
         return args