diff --git a/repos/system_upgrade/common/actors/checkcustommodifications/libraries/checkcustommodifications.py b/repos/system_upgrade/common/actors/checkcustommodifications/libraries/checkcustommodifications.py
index c0250996c7..105dda3e4b 100644
--- a/repos/system_upgrade/common/actors/checkcustommodifications/libraries/checkcustommodifications.py
+++ b/repos/system_upgrade/common/actors/checkcustommodifications/libraries/checkcustommodifications.py
@@ -2,20 +2,23 @@
 from leapp.libraries.stdlib import api
 from leapp.models import CustomModifications
 
+FMT_LIST_SEPARATOR = "\n    - "
+
 
 def _create_report(msgs, report_type, component=None, hint=None):
     filtered_msgs = [m for m in msgs or [] if m.type == report_type and (not component or m.component == component)]
     if not filtered_msgs:
         # Nothing to report
         return
-    discovered_files = '\n'.join(
-            ['- {filename}{actor}'.format(filename=m.filename,
-                                          actor=' ({} Actor)'.format(m.actor_name) if m.actor_name else '')
+    discovered_files = ''.join(
+            ['{sep}{filename}{actor}'.format(sep=FMT_LIST_SEPARATOR,
+                                             filename=m.filename,
+                                             actor=' ({} Actor)'.format(m.actor_name) if m.actor_name else '')
              for m in filtered_msgs])
     component_str = 'leapp {}'.format(component) if component else 'leapp'
     title = '{report_type} files were discovered on the system in {component_str} directories'
     summary = ('Apparently some {report_type} files have been found in {component_str} installation directories.\n'
-               'Please consult the list of discovered files for more information:\n'
+               'Please consult the list of discovered files for more information:'
                '{discovered_files}')
     report_parts = [
         reporting.Title(title.format(report_type=report_type.capitalize(), component_str=component_str)),