diff --git a/_toc.yml b/_toc.yml
index d505c7e6..b8d101c4 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -17,6 +17,7 @@ chapters:
       - file: user-guide/ssh_client_config
       - file: user-guide/firefox_profile_per_host
       - file: user-guide/kerberos_lifetime
+      - file: user-guide/mpirun
       - file: user-guide/putty
 
   - file: admin-guide/index
diff --git a/admin-guide/troubleshooting/ssd.md b/admin-guide/troubleshooting/sssd.md
similarity index 100%
rename from admin-guide/troubleshooting/ssd.md
rename to admin-guide/troubleshooting/sssd.md