diff --git a/rules/gsuite_activityevent_rules/gsuite_workspace_calendar_external_sharing.py b/rules/gsuite_activityevent_rules/gsuite_workspace_calendar_external_sharing.py
index d290a1d30..72d602aba 100644
--- a/rules/gsuite_activityevent_rules/gsuite_workspace_calendar_external_sharing.py
+++ b/rules/gsuite_activityevent_rules/gsuite_workspace_calendar_external_sharing.py
@@ -18,5 +18,5 @@ def title(event):
         f"GSuite workspace setting for default calendar sharing was changed by "
         f"[{event.deep_get('actor', 'email', default='<UNKNOWN_EMAIL>')}] "
         + f"from [{event.deep_get('parameters', 'OLD_VALUE', default='<NO_OLD_SETTING_FOUND>')}] "
-        + "to [{event.deep_get('parameters', 'NEW_VALUE', default='<NO_NEW_SETTING_FOUND>')}]"
+        + f"to [{event.deep_get('parameters', 'NEW_VALUE', default='<NO_NEW_SETTING_FOUND>')}]"
     )