diff --git a/activerecord/test/cases/json_attribute_test.rb b/activerecord/test/cases/json_attribute_test.rb
index a6fd4f34dc..63f3c77fc3 100644
--- a/activerecord/test/cases/json_attribute_test.rb
+++ b/activerecord/test/cases/json_attribute_test.rb
@@ -3,35 +3,33 @@
 require "cases/helper"
 require "cases/json_shared_test_cases"
 
-if ActiveRecord::Base.connection.supports_json?
-  class JsonAttributeTest < ActiveRecord::TestCase
-    include JSONSharedTestCases
-    self.use_transactional_tests = false
+class JsonAttributeTest < ActiveRecord::TestCase
+  include JSONSharedTestCases
+  self.use_transactional_tests = false
 
-    class JsonDataTypeOnText < ActiveRecord::Base
-      self.table_name = "json_data_type"
+  class JsonDataTypeOnText < ActiveRecord::Base
+    self.table_name = "json_data_type"
 
-      attribute :payload,  :json
-      attribute :settings, :json
+    attribute :payload,  :json
+    attribute :settings, :json
 
-      store_accessor :settings, :resolution
-    end
-
-    def setup
-      super
-      @connection.create_table("json_data_type") do |t|
-        t.text "payload"
-        t.text "settings"
-      end
-    end
-
-    private
-      def column_type
-        :text
-      end
-
-      def klass
-        JsonDataTypeOnText
-      end
+    store_accessor :settings, :resolution
   end
+
+  def setup
+    super
+    @connection.create_table("json_data_type") do |t|
+      t.text "payload"
+      t.text "settings"
+    end
+  end
+
+  private
+    def column_type
+      :text
+    end
+
+    def klass
+      JsonDataTypeOnText
+    end
 end