diff --git a/var/spack/repos/builtin/packages/lcio/package.py b/var/spack/repos/builtin/packages/lcio/package.py
index 4319774b15..66a0c66bf5 100644
--- a/var/spack/repos/builtin/packages/lcio/package.py
+++ b/var/spack/repos/builtin/packages/lcio/package.py
@@ -72,3 +72,7 @@ def url_for_version(self, version):
             print('Error - Wrong version format provided')
             return
         return url
+
+    def setup_run_environment(self, env):
+        env.set('LCIO', self.prefix)
+        env.prepend_path('PYTHONPATH', self.prefix.python)