diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index b41d37df..e33d46e6 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -24,6 +24,7 @@
 - Replaced entity with getter (#652)
 - Resolved TODO in Dockerfile (#680)
 - Resolved TODO at src/reporter/tests/test_timescale_types.py (#667)
+- Resolved TODO in src/wq/ql/flask_utils.py (#707)
 
 ### Bug fixes
 
diff --git a/src/wq/ql/flaskutils.py b/src/wq/ql/flaskutils.py
index 5647fd4d..2d8a870a 100644
--- a/src/wq/ql/flaskutils.py
+++ b/src/wq/ql/flaskutils.py
@@ -12,10 +12,7 @@ def json_array_streamer(xs: Iterable[BaseModel]) -> Iterable[str]:
     for x in xs:
         json_repr = x.json()
         yield json_repr + ',\n'
-    yield 'null\n]'
-# TODO how to get rid of the null terminator in an efficient and **simple**
-# way? I could use the same put-back approach as in itersplit but I'd rather
-# keep it simple.
+    yield '\n]'
 
 
 def build_json_array_response_stream(xs: Iterable[BaseModel]) -> Response: