diff --git a/backend/lcfs/tests/other_uses/test_other_uses_repo.py b/backend/lcfs/tests/other_uses/test_other_uses_repo.py
index 8bd39f562..84ef51cf0 100644
--- a/backend/lcfs/tests/other_uses/test_other_uses_repo.py
+++ b/backend/lcfs/tests/other_uses/test_other_uses_repo.py
@@ -11,24 +11,58 @@
 
 
 @pytest.fixture
-def mock_db_session():
+def mock_query_result():
+    # Setup mock for database query result chain
+    mock_result = AsyncMock()
+    mock_result.unique = MagicMock(return_value=mock_result)
+    mock_result.scalars = MagicMock(return_value=mock_result)
+    mock_result.all = MagicMock(
+        return_value=[
+            MagicMock(
+                fuel_type_id=1,
+                fuel_type="Gasoline",
+                default_carbon_intensity=12.34,
+                units="L",
+                unrecognized=False,
+                fuel_instances=[
+                    MagicMock(
+                        fuel_category=MagicMock(
+                            fuel_category_id=1, category="Petroleum-based"
+                        )
+                    )
+                ],
+                fuel_codes=[
+                    MagicMock(fuel_code_id=1, fuel_code="FC123", carbon_intensity=10.5)
+                ],
+            )
+        ]
+    )
+    return mock_result
+
+
+@pytest.fixture
+def mock_db_session(mock_query_result):
     session = MagicMock(spec=AsyncSession)
-    execute_result = AsyncMock()
-    execute_result.unique = MagicMock(return_value=execute_result)
-    execute_result.scalars = MagicMock(return_value=execute_result)
-    execute_result.all = MagicMock(return_value=[MagicMock(spec=OtherUses)])
-    execute_result.first = MagicMock(return_value=MagicMock(spec=OtherUses))
-    session.execute.return_value = execute_result
+    session.execute = AsyncMock(return_value=mock_query_result)
     return session
 
 
 @pytest.fixture
 def other_uses_repo(mock_db_session):
     repo = OtherUsesRepository(db=mock_db_session)
+
     repo.fuel_code_repo = MagicMock()
     repo.fuel_code_repo.get_fuel_categories = AsyncMock(return_value=[])
     repo.fuel_code_repo.get_fuel_types = AsyncMock(return_value=[])
     repo.fuel_code_repo.get_expected_use_types = AsyncMock(return_value=[])
+
+    # Mock for local get_formatted_fuel_types method
+    async def mock_get_formatted_fuel_types():
+        mock_result = await mock_db_session.execute(AsyncMock())
+        return mock_result.unique().scalars().all()
+
+    repo.get_formatted_fuel_types = AsyncMock(side_effect=mock_get_formatted_fuel_types)
+
     return repo
 
 
diff --git a/backend/lcfs/web/api/other_uses/repo.py b/backend/lcfs/web/api/other_uses/repo.py
index 8e0f5ca4d..595de5882 100644
--- a/backend/lcfs/web/api/other_uses/repo.py
+++ b/backend/lcfs/web/api/other_uses/repo.py
@@ -76,7 +76,7 @@ async def get_latest_other_uses_by_group_uuid(
         )
 
         result = await self.db.execute(query)
-        return result.scalars().first()
+        return await result.unique().scalars().first()
 
     @repo_handler
     async def get_other_uses(self, compliance_report_id: int) -> List[OtherUsesSchema]:
@@ -302,7 +302,7 @@ async def get_other_use_version_by_user(
         )
 
         result = await self.db.execute(query)
-        return result.scalars().first()
+        return await result.scalars().first()
 
     @repo_handler
     async def get_formatted_fuel_types(self) -> List[Dict[str, Any]]:
@@ -333,7 +333,7 @@ async def get_formatted_fuel_types(self) -> List[Dict[str, Any]]:
         )
 
         result = await self.db.execute(query)
-        fuel_types = result.unique().scalars().all()
+        fuel_types = await result.unique().scalars().all()
 
         # Prepare the data in the format matching your schema
         formatted_fuel_types = []