diff --git a/src/gen/db/upgrade.py b/src/gen/db/upgrade.py
index bc6c573a4..c326c0bb7 100644
--- a/src/gen/db/upgrade.py
+++ b/src/gen/db/upgrade.py
@@ -421,7 +421,7 @@ def gramps_upgrade_16(self):
              "Tools -> Family Tree Processing -> Merge\n"
              "in order to merge citations that contain similar\n"
              "information")
-    InfoDialog(_('Upgrade Statistics'), txt)
+    InfoDialog(_('Upgrade Statistics'), txt, monospaced=True)
 
 def upgrade_media_list_16(self, media_list):
     new_media_list = []