diff --git a/app/utils/cache.py b/app/utils/cache.py
index a3e582a9..70307970 100644
--- a/app/utils/cache.py
+++ b/app/utils/cache.py
@@ -1,7 +1,7 @@
 """
 Lightweight Redis caching layer for frequently accessed data.
 
-Provides a thin wrapper around Redis GET/SET with JSON serialisation and
+Provides a thin wrapper around Redis GET/SET with JSON serialization and
 configurable TTLs.  All operations are **fail-open**: if Redis is
 unavailable the caller simply gets a cache miss and falls back to the
 database or other source of truth.
diff --git a/docs/ConfigurationGuide.md b/docs/ConfigurationGuide.md
index 844bfc2e..941d5dec 100644
--- a/docs/ConfigurationGuide.md
+++ b/docs/ConfigurationGuide.md
@@ -800,7 +800,7 @@ UI_DEFAULT_COLOR_SCHEME=dark
 
 ## Performance & Caching
 
-DocuElevate automatically optimises database access and uses Redis as a
+DocuElevate automatically optimizes database access and uses Redis as a
 caching layer for frequently accessed data.
 
 ### Database Indexes
diff --git a/tests/test_cache.py b/tests/test_cache.py
index 59ec3dab..e869e027 100644
--- a/tests/test_cache.py
+++ b/tests/test_cache.py
@@ -50,7 +50,7 @@ def test_cache_get_returns_none_on_miss():
 
 @pytest.mark.unit
 def test_cache_get_returns_deserialized_value():
-    """cache_get should deserialise the stored JSON string."""
+    """cache_get should deserialize the stored JSON string."""
     mock_client = MagicMock()
     mock_client.get.return_value = json.dumps(["application/pdf", "image/png"])
     with patch("app.utils.cache._get_redis", return_value=mock_client):