diff --git a/var/spack/repos/builtin/packages/lammps/package.py b/var/spack/repos/builtin/packages/lammps/package.py
index cfe5cfa4bb9..b66712d02e2 100644
--- a/var/spack/repos/builtin/packages/lammps/package.py
+++ b/var/spack/repos/builtin/packages/lammps/package.py
@@ -202,5 +202,5 @@ def install(self, spec, prefix):
                 install('liblammps_{0}.{1}'.format(self.target_name,
                                                    dso_suffix), prefix.lib)
 
-                # TODO: install the necessary headers
-                mkdirp(prefix.include)
+                mkdirp(prefix.include.lammps)
+                install('library.h', prefix.include.lammps)