diff --git a/lib/en57/query.rb b/lib/en57/query.rb
index f7f9613..3b4d1d7 100644
--- a/lib/en57/query.rb
+++ b/lib/en57/query.rb
@@ -29,8 +29,6 @@ module En57
 
     def encoded_criteria = criteria.map(&:matcher)
 
-    def to_query = self
-
     def self.all = new(criteria: [])
 
     def refine_last
diff --git a/test/test_event_store.rb b/test/test_event_store.rb
index 7cef1b4..43315bd 100644
--- a/test/test_event_store.rb
+++ b/test/test_event_store.rb
@@ -53,20 +53,6 @@ module En57
       end
     end
 
-    def test_append_accepts_query_for_fail_if
-      event = Event.new(type: "CreditsToppedUp")
-
-      with_repository do |repository|
-        fail_if =
-          Query.new(
-            criteria: [Query::Criteria.new(types: ["OrderPlaced"], tags: [])],
-          )
-        repository.expect(:append, nil, [[event]], fail_if:)
-
-        EventStore.new(repository).append([event], fail_if:)
-      end
-    end
-
     private
 
     def with_repository
diff --git a/test/test_query.rb b/test/test_query.rb
index ee4b13d..c29ea8a 100644
--- a/test/test_query.rb
+++ b/test/test_query.rb
@@ -84,14 +84,5 @@ module En57
         query.encoded_criteria,
       )
     end
-
-    def test_to_query_returns_self
-      query =
-        Query.new(
-          criteria: [Query::Criteria.new(types: ["OrderPlaced"], tags: [])],
-        )
-
-      assert_same(query, query.to_query)
-    end
   end
 end