diff --git a/zerver/lib/bugdown/api_code_examples.py b/zerver/lib/bugdown/api_code_examples.py
index 58aae23eaf..6d56787c34 100644
--- a/zerver/lib/bugdown/api_code_examples.py
+++ b/zerver/lib/bugdown/api_code_examples.py
@@ -1,7 +1,7 @@
 import re
 import os
 import sys
-import ujson
+import json
 import inspect
 
 from markdown.extensions import Extension
@@ -143,7 +143,8 @@ class APICodeExamplesPreprocessor(Preprocessor):
         else:
             fixture_dict = zerver.lib.api_test_helpers.FIXTURES[function]
 
-        fixture_json = ujson.dumps(fixture_dict, indent=4, sort_keys=True)
+        fixture_json = json.dumps(fixture_dict, indent=4, sort_keys=True,
+                                  separators=(',', ': '))
 
         fixture.append('```')
         fixture.extend(fixture_json.splitlines())