diff --git a/software/erp5/instance-zope.cfg b/software/erp5/instance-zope.cfg
index 976357a3432392f125082402ba0ec71c89a12225..05d6c90a6325eb69b1a205abd20e920c5ae1e92e 100644
--- a/software/erp5/instance-zope.cfg
+++ b/software/erp5/instance-zope.cfg
@@ -41,6 +41,7 @@ lock-file = $${basedirectory:run}/apache.lock
 error-log = $${basedirectory:log}/apache-error.log
 access-log = $${basedirectory:log}/apache-access.log
 apache-binary = ${apache:location}/bin/httpd
+scheme = https
 
 [ca-apache-zope-backend]
 <= certificate-authority
diff --git a/software/erp5/software.cfg b/software/erp5/software.cfg
index 40fb02321ad2b83e8d28614397f89897607470ff..40f402562505048b2253570462bfc0606a6d66ce 100644
--- a/software/erp5/software.cfg
+++ b/software/erp5/software.cfg
@@ -59,7 +59,7 @@ mode = 0644
 [template-zope]
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/instance-zope.cfg
-md5sum = c6bac431bcd847a413f2c76991716f21
+md5sum = 738b757185d5213e05176f5eefe9e2ae
 output = ${buildout:directory}/template-zope.cfg
 mode = 0644