diff --git a/lib/pact/shared/active_support_support.rb b/lib/pact/shared/active_support_support.rb
index 2e4826b..40167d0 100644
--- a/lib/pact/shared/active_support_support.rb
+++ b/lib/pact/shared/active_support_support.rb
@@ -42,10 +42,11 @@ def fix_regexp regexp
     # Oh ActiveSupport, why....
     def fix_json_formatting json
       if json =~ /\{".*?":"/
-        JSON.pretty_generate(JSON.parse(json, create_additions: false))
+        json = JSON.pretty_generate(JSON.parse(json, create_additions: false))
       else
         json
       end
+      fix_empty_hash_and_array json
     end
 
     def remove_unicode json
@@ -61,5 +62,13 @@ def warn_about_regexp(thing)
         end
       end
     end
+
+    private
+
+    def fix_empty_hash_and_array json
+      json = json.gsub(/({\s*})/, "{\n        }")
+      json.gsub(/\[\s*\]/, "[\n        ]")
+      json
+    end
   end
 end