diff --git a/src/documents/search/_schema.py b/src/documents/search/_schema.py
index 36ac83356..a82938a39 100644
--- a/src/documents/search/_schema.py
+++ b/src/documents/search/_schema.py
@@ -81,8 +81,10 @@ def build_schema() -> tantivy.Schema:
         tokenizer_name="simple_search_analyzer",
     )
 
-    # Autocomplete prefix scan - stored, not indexed
-    sb.add_text_field("autocomplete_word", stored=True, tokenizer_name="raw")
+    # Autocomplete prefix scan via terms_with_prefix, which walks the field's
+    # term dictionary - so the field must be indexed (term dict), not stored.
+    # The stored value is never read back, so storing it only wastes space.
+    sb.add_text_field("autocomplete_word", stored=False, tokenizer_name="raw")
 
     sb.add_text_field("tag", stored=True, tokenizer_name="paperless_text")
 
diff --git a/src/documents/tests/test_api_search.py b/src/documents/tests/test_api_search.py
index 830d00113..ad82e1a8a 100644
--- a/src/documents/tests/test_api_search.py
+++ b/src/documents/tests/test_api_search.py
@@ -987,29 +987,32 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
         THEN:
             - The similar documents are returned from the API request
         """
-        d1 = Document.objects.create(
+        # Distinct created/added dates: documents created at the same instant
+        # share a timestamp term, and more_like_this (which cannot be scoped to
+        # content fields) would then match on it, surfacing unrelated documents.
+        d1 = DocumentFactory(
             title="invoice",
             content="the thing i bought at a shop and paid with bank account",
-            checksum="A",
-            pk=1,
+            created=datetime.date(2018, 1, 1),
+            added=timezone.make_aware(datetime.datetime(2018, 1, 1)),
         )
-        d2 = Document.objects.create(
+        d2 = DocumentFactory(
             title="bank statement 1",
             content="things i paid for in august",
-            pk=2,
-            checksum="B",
+            created=datetime.date(2019, 3, 4),
+            added=timezone.make_aware(datetime.datetime(2019, 3, 4)),
         )
-        d3 = Document.objects.create(
+        d3 = DocumentFactory(
             title="bank statement 3",
             content="things i paid for in september",
-            pk=3,
-            checksum="C",
+            created=datetime.date(2020, 7, 9),
+            added=timezone.make_aware(datetime.datetime(2020, 7, 9)),
         )
-        d4 = Document.objects.create(
+        d4 = DocumentFactory(
             title="Quarterly Report",
             content="quarterly revenue profit margin earnings growth",
-            pk=4,
-            checksum="ABC",
+            created=datetime.date(2021, 11, 30),
+            added=timezone.make_aware(datetime.datetime(2021, 11, 30)),
         )
         backend = get_backend()
         backend.add_or_update(d1)