diff --git a/lib/spack/docs/_themes/sphinx_rtd_theme/footer.html b/lib/spack/docs/_themes/sphinx_rtd_theme/footer.html
index d000dcbc2ca..c4f11f3f8d6 100644
--- a/lib/spack/docs/_themes/sphinx_rtd_theme/footer.html
+++ b/lib/spack/docs/_themes/sphinx_rtd_theme/footer.html
@@ -24,7 +24,7 @@
Written by Todd Gamblin (tgamblin@llnl.gov) and
- many contributors. LLNL-CODE-647188.
+ many contributors. LLNL-CODE-647188.
{%- if last_updated %}