diff --git a/app/models/lettings_log.rb b/app/models/lettings_log.rb
index 73df756d0..b5eaf5ffc 100644
--- a/app/models/lettings_log.rb
+++ b/app/models/lettings_log.rb
@@ -345,6 +345,11 @@ class LettingsLog < Log
     tenancy == 4
   end
 
+  def is_periodic_tenancy?
+    # 8: Periodic
+    tenancy == 8
+  end
+
   def is_internal_transfer?
     # 1: Internal Transfer
     referral == 1
diff --git a/app/models/validations/tenancy_validations.rb b/app/models/validations/tenancy_validations.rb
index 01281a931..012317f1e 100644
--- a/app/models/validations/tenancy_validations.rb
+++ b/app/models/validations/tenancy_validations.rb
@@ -24,7 +24,7 @@ module Validations::TenancyValidations
     ]
     rent_type_independent_conditions = [
       {
-        condition: !(record.is_secure_tenancy? || record.is_assured_shorthold_tenancy?) && is_present,
+        condition: !(record.is_secure_tenancy? || record.is_assured_shorthold_tenancy? || record.is_periodic_tenancy?) && is_present,
         error: I18n.t("validations.tenancy.length.fixed_term_not_required"),
       },
     ]