diff --git a/db/migrate/20180815115351_remove_event_indices.rb b/db/migrate/20180815115351_remove_event_indices.rb
new file mode 100644
index 00000000..2be20c1d
--- /dev/null
+++ b/db/migrate/20180815115351_remove_event_indices.rb
@@ -0,0 +1,7 @@
+class RemoveEventIndices < ActiveRecord::Migration
+  def change
+    remove_index :events, [:user_type, :user_id]
+    remove_index :events, :exercise_id
+    remove_index :events, :file_id
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index bfa3ad66..2646f080 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180814154055) do
+ActiveRecord::Schema.define(version: 20180815115351) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -106,10 +106,6 @@ ActiveRecord::Schema.define(version: 20180814154055) do
     t.datetime "updated_at",  null: false
   end
 
-  add_index "events", ["exercise_id"], name: "index_events_on_exercise_id", using: :btree
-  add_index "events", ["file_id"], name: "index_events_on_file_id", using: :btree
-  add_index "events", ["user_type", "user_id"], name: "index_events_on_user_type_and_user_id", using: :btree
-
   create_table "execution_environments", force: :cascade do |t|
     t.string   "docker_image",             limit: 255
     t.string   "name",                     limit: 255