diff --git a/src/main.py b/src/main.py
index 7f169f9..5c9c51b 100644
--- a/src/main.py
+++ b/src/main.py
@@ -95,7 +95,7 @@ async def context() -> JSONResponse:
         }, headers={
             "Retry-After": str(max(1, math.ceil(CONTEXT_TIMEOUT_SECONDS)))
         } if isinstance(e, TimeoutError) else None)
-    user_model = User(id=user_data["id"], login=user_data["login"], full_name=user_data.get("full_name", ""), email=user_data.get("email", ""))
+    user_model = User(id=user_data["id"], login=user_data["login"], full_name=user_data.get("full_name") or "", email=user_data.get("email") or "")
     repo_models = [
         Repo(id=r["id"], name=r["name"], full_name=r["full_name"], description=r.get("description") or "", url=r["html_url"], updated_at=r.get("updated_at", ""))
         for r in (repo_data or [])[:50]
diff --git a/tests/test_context_timeout.py b/tests/test_context_timeout.py
index 6ef3ada..eed6c71 100644
--- a/tests/test_context_timeout.py
+++ b/tests/test_context_timeout.py
@@ -141,3 +141,29 @@ async def test_context_normalizes_null_collection_payloads(monkeypatch):
     assert context["repos"] == []
     assert context["issues"] == []
     assert context["pull_requests"] == []
+
+
+@pytest.mark.anyio
+async def test_context_normalizes_nullable_user_profile_fields(monkeypatch):
+    async def user():
+        return {
+            "id": 1,
+            "login": "timmy",
+            "full_name": None,
+            "email": None,
+        }
+
+    async def empty_collection():
+        return []
+
+    monkeypatch.setattr(main, "current_user", user)
+    monkeypatch.setattr(main, "repos", empty_collection)
+    monkeypatch.setattr(main, "issues", empty_collection)
+    monkeypatch.setattr(main, "pull_requests", empty_collection)
+
+    response = await main.context()
+    context = json.loads(response.body)
+
+    assert response.status_code == 200
+    assert context["user"]["full_name"] == ""
+    assert context["user"]["email"] == ""