diff --git a/app/models/ticket.rb b/app/models/ticket.rb
index 8d7a9cce5..e76413c5f 100644
--- a/app/models/ticket.rb
+++ b/app/models/ticket.rb
@@ -501,9 +501,11 @@ condition example
       selector = selector_raw.stringify_keys
       raise "Invalid selector, operator missing #{selector.inspect}" if !selector['operator']
 
-      # validate value / allow empty but only if pre_condition exists
+      # validate value / allow empty but only if pre_condition exists and is not specific
       if !selector.key?('value') || ((selector['value'].class == String || selector['value'].class == Array) && (selector['value'].respond_to?(:empty?) && selector['value'].empty?))
-        return nil if selector['pre_condition'].nil? || (selector['pre_condition'].respond_to?(:empty?) && selector['pre_condition'].empty?)
+        return nil if selector['pre_condition'].nil?
+        return nil if selector['pre_condition'].respond_to?(:empty?) && selector['pre_condition'].empty?
+        return nil if selector['pre_condition'] == 'specific'
       end
 
       # validate pre_condition values
diff --git a/test/unit/ticket_selector_test.rb b/test/unit/ticket_selector_test.rb
index 2d7039d12..218dbbeac 100644
--- a/test/unit/ticket_selector_test.rb
+++ b/test/unit/ticket_selector_test.rb
@@ -773,6 +773,29 @@ class TicketSelectorTest < ActiveSupport::TestCase
     ticket_count, tickets = Ticket.selectors(condition, 10, customer2)
     assert_equal(ticket_count, 0)
 
+    condition = {
+      'ticket.group_id' => {
+        operator: 'is',
+        value: group.id,
+      },
+      'ticket.owner_id' => {
+        operator: 'is',
+        pre_condition: 'specific',
+        #value: agent1.id, # value is not set, no result should be shown
+      },
+    }
+    ticket_count, tickets = Ticket.selectors(condition, 10, agent1)
+    assert_equal(ticket_count, nil)
+
+    ticket_count, tickets = Ticket.selectors(condition, 10, agent2)
+    assert_equal(ticket_count, nil)
+
+    ticket_count, tickets = Ticket.selectors(condition, 10, customer1)
+    assert_equal(ticket_count, nil)
+
+    ticket_count, tickets = Ticket.selectors(condition, 10, customer2)
+    assert_equal(ticket_count, nil)
+
     condition = {
       'ticket.group_id' => {
         operator: 'is',