diff --git a/app/models/concerns/taggable.rb b/app/models/concerns/taggable.rb
index 52efc04a7..9126e271a 100644
--- a/app/models/concerns/taggable.rb
+++ b/app/models/concerns/taggable.rb
@@ -3,7 +3,7 @@ module Taggable
 
   included do
     acts_as_taggable
-    validate :max_number_of_tags
+    validate :max_number_of_tags, on: :create
   end
 
   def tag_list_with_limit(limit = nil)
diff --git a/spec/models/proposal_spec.rb b/spec/models/proposal_spec.rb
index 6e5acb379..964f8f057 100644
--- a/spec/models/proposal_spec.rb
+++ b/spec/models/proposal_spec.rb
@@ -194,6 +194,22 @@ describe Proposal do
     end
   end
 
+  describe '#cached_votes_up' do
+
+    describe "with deprecated long tag list" do
+
+      it "should increase number of cached_total_votes" do
+        proposal = create(:proposal)
+
+        tag_list = ["tag1", "tag2", "tag3", "tag4", "tag5", "tag6", "tag7"]
+        proposal.update_attribute(:tag_list, tag_list)
+
+        expect(proposal.update_cached_votes).to eq(true)
+      end
+
+    end
+  end
+
   describe '#hot_score' do
     let(:now) { Time.now }