diff --git a/playbooks/munin.yml b/playbooks/munin.yml
index 210f871..e8874eb 100644
--- a/playbooks/munin.yml
+++ b/playbooks/munin.yml
@@ -27,7 +27,7 @@
       keytab: /etc/httpd/httpd.keytab
       principals: HTTP/munin.foo.sh@FOO.SH
       group: apache
-    - munin-server
+    - munin_server
 
   tasks:
     - name: require authentication for munin web
diff --git a/roles/munin-server/files/munin-apache.conf b/roles/munin_server/files/munin-apache.conf
similarity index 100%
rename from roles/munin-server/files/munin-apache.conf
rename to roles/munin_server/files/munin-apache.conf
diff --git a/roles/munin-server/files/munin-tmpfiles.conf b/roles/munin_server/files/munin-tmpfiles.conf
similarity index 100%
rename from roles/munin-server/files/munin-tmpfiles.conf
rename to roles/munin_server/files/munin-tmpfiles.conf
diff --git a/roles/munin-server/files/override.conf b/roles/munin_server/files/override.conf
similarity index 100%
rename from roles/munin-server/files/override.conf
rename to roles/munin_server/files/override.conf
diff --git a/roles/munin-server/meta/main.yml b/roles/munin_server/meta/main.yml
similarity index 100%
rename from roles/munin-server/meta/main.yml
rename to roles/munin_server/meta/main.yml
diff --git a/roles/munin-server/tasks/main.yml b/roles/munin_server/tasks/main.yml
similarity index 100%
rename from roles/munin-server/tasks/main.yml
rename to roles/munin_server/tasks/main.yml
diff --git a/roles/munin-server/templates/hosts.conf.j2 b/roles/munin_server/templates/hosts.conf.j2
similarity index 100%
rename from roles/munin-server/templates/hosts.conf.j2
rename to roles/munin_server/templates/hosts.conf.j2
diff --git a/roles/munin-server/templates/tls.conf.j2 b/roles/munin_server/templates/tls.conf.j2
similarity index 100%
rename from roles/munin-server/templates/tls.conf.j2
rename to roles/munin_server/templates/tls.conf.j2