diff --git a/db/migrate/20170915101519_add_legislation_proposals_count_to_tags.rb b/db/migrate/20170915101519_add_legislation_proposals_count_to_tags.rb
index 9ce6ace89..8c47394a4 100644
--- a/db/migrate/20170915101519_add_legislation_proposals_count_to_tags.rb
+++ b/db/migrate/20170915101519_add_legislation_proposals_count_to_tags.rb
@@ -1,6 +1,6 @@
 class AddLegislationProposalsCountToTags < ActiveRecord::Migration
   def change
     add_column :tags, "legislation/proposals_count", :integer, default: 0
-    add_index :tags, "legislation/proposals_count"
+    add_index :tags, :"legislation/proposals_count"
   end
 end
diff --git a/db/migrate/20170922101247_add_legislation_processes_count_to_tags.rb b/db/migrate/20170922101247_add_legislation_processes_count_to_tags.rb
index 698a66af6..4ae67b760 100644
--- a/db/migrate/20170922101247_add_legislation_processes_count_to_tags.rb
+++ b/db/migrate/20170922101247_add_legislation_processes_count_to_tags.rb
@@ -1,6 +1,6 @@
 class AddLegislationProcessesCountToTags < ActiveRecord::Migration
   def change
     add_column :tags, "legislation/processes_count", :integer, default: 0
-    add_index :tags, "legislation/processes_count"
+    add_index :tags, :"legislation/processes_count"
   end
 end