diff --git a/app/models/event.rb b/app/models/event.rb
index 842dd970..d99f190d 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -41,7 +41,7 @@ class Event < ApplicationRecord
   validate :abstract_limit
   validate :before_end_of_conference, on: :create
   validates :title, presence: true
-  validates :abstract, presence: true
+  validates :abstract, presence: true, if: 'event_type.minimum_abstract_length > 0'
   validates :event_type, presence: true
   validates :program, presence: true
   validates :speakers, presence: true