diff --git a/roles/copr/backend/files/provision/files/mock/custom-0-i386.cfg b/roles/copr/backend/files/provision/files/mock/custom-1-i386.cfg
similarity index 92%
rename from roles/copr/backend/files/provision/files/mock/custom-0-i386.cfg
rename to roles/copr/backend/files/provision/files/mock/custom-1-i386.cfg
index 4d909bccaf..e87c74f052 100644
--- a/roles/copr/backend/files/provision/files/mock/custom-0-i386.cfg
+++ b/roles/copr/backend/files/provision/files/mock/custom-1-i386.cfg
@@ -1,4 +1,4 @@
-config_opts['root'] = 'custom-0-i386'
+config_opts['root'] = 'custom-1-i386'
 config_opts['target_arch'] = 'i686'
 config_opts['legal_host_arches'] = ('i386', 'i586', 'i686', 'x86_64')
 config_opts['chroot_setup_cmd'] = ''
diff --git a/roles/copr/backend/files/provision/files/mock/custom-0-ppc64le.cfg b/roles/copr/backend/files/provision/files/mock/custom-1-ppc64le.cfg
similarity index 91%
rename from roles/copr/backend/files/provision/files/mock/custom-0-ppc64le.cfg
rename to roles/copr/backend/files/provision/files/mock/custom-1-ppc64le.cfg
index 2327ac9974..2ba2112d8b 100644
--- a/roles/copr/backend/files/provision/files/mock/custom-0-ppc64le.cfg
+++ b/roles/copr/backend/files/provision/files/mock/custom-1-ppc64le.cfg
@@ -1,4 +1,4 @@
-config_opts['root'] = 'custom-0-ppc64le'
+config_opts['root'] = 'custom-1-ppc64le'
 config_opts['target_arch'] = 'ppc64le'
 config_opts['legal_host_arches'] = ('ppc64le',)
 config_opts['chroot_setup_cmd'] = ''
diff --git a/roles/copr/backend/files/provision/files/mock/custom-0-x86_64.cfg b/roles/copr/backend/files/provision/files/mock/custom-1-x86_64.cfg
similarity index 92%
rename from roles/copr/backend/files/provision/files/mock/custom-0-x86_64.cfg
rename to roles/copr/backend/files/provision/files/mock/custom-1-x86_64.cfg
index 9935d4b38b..913bfde47d 100644
--- a/roles/copr/backend/files/provision/files/mock/custom-0-x86_64.cfg
+++ b/roles/copr/backend/files/provision/files/mock/custom-1-x86_64.cfg
@@ -1,4 +1,4 @@
-config_opts['root'] = 'custom-0-x86_64'
+config_opts['root'] = 'custom-1-x86_64'
 config_opts['target_arch'] = 'x86_64'
 config_opts['legal_host_arches'] = ('x86_64',)
 config_opts['chroot_setup_cmd'] = ''
diff --git a/roles/copr/backend/files/provision/provision_builder_tasks.yml b/roles/copr/backend/files/provision/provision_builder_tasks.yml
index bd43f7491f..bb6731e169 100644
--- a/roles/copr/backend/files/provision/provision_builder_tasks.yml
+++ b/roles/copr/backend/files/provision/provision_builder_tasks.yml
@@ -50,9 +50,9 @@
   template: src=files/mock/{{ item }} dest=/etc/mock
   with_items:
     - site-defaults.cfg
-    - custom-0-x86_64.cfg
-    - custom-0-i386.cfg
-    - custom-0-ppc64le.cfg
+    - custom-1-x86_64.cfg
+    - custom-1-i386.cfg
+    - custom-1-ppc64le.cfg
 
 # TODO: file globs or ansible escaping works strange, now using predefined file location
 #- name: "fix mock configs to use nearest mirror"