diff --git a/tests/conftest.py b/tests/conftest.py
index 7332f5d8..508583a6 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -67,7 +67,6 @@ def project_setup(grpc_channel) -> Generator[Tuple[str, str], None, None]:
 
 
 # NOTE: This fixture depends on working project creation and deletion
-# this uses some example coordinates
 @pytest.fixture
 def epsg4326_project_setup(grpc_channel) -> Generator[str, None, None]:
     fb_builder = flatbuffers.Builder()
@@ -88,3 +87,26 @@ def epsg4326_project_setup(grpc_channel) -> Generator[str, None, None]:
     fb_helper.deleteProject(
         grpc_channel, flatbuffers.Builder(), project_name, project_uuid
     )
+
+
+# NOTE: This fixture depends on working project creation and deletion
+@pytest.fixture
+def epsg4314_project_setup(grpc_channel) -> Generator[str, None, None]:
+    fb_builder = flatbuffers.Builder()
+    project_name = "geodeticProject"
+    project_uuid = fb_helper.createProject(
+        grpc_channel,
+        fb_builder,
+        project_name,
+        "map",
+        "EPSG:4314",
+        altitude=0,
+        latitude=52.35_96_109,
+        longitude=8.28_06_335,
+    )
+
+    yield project_uuid
+
+    fb_helper.deleteProject(
+        grpc_channel, flatbuffers.Builder(), project_name, project_uuid
+    )
diff --git a/tests/python/gRPC/instances/test_gRPC_fb_getInstances.py b/tests/python/gRPC/instances/test_gRPC_fb_getInstances.py
index 322b2ae6..36122d4c 100644
--- a/tests/python/gRPC/instances/test_gRPC_fb_getInstances.py
+++ b/tests/python/gRPC/instances/test_gRPC_fb_getInstances.py
@@ -769,3 +769,78 @@ def test_gRPC_getInstanceQueryCrsStringEPSG3857(
     )
 
     assert instance_uuids_polygon == sorted(label_instances)
+
+
+def test_gRPC_getInstanceQueryProjectEPSG4314(
+    grpc_channel, epsg4314_project_setup
+):
+    proj_uuid = epsg4314_project_setup
+    serv_man = ServiceManager(grpc_channel)
+
+    camera_uuid = send_imgs_fb.send_cameraintrinsics(grpc_channel, proj_uuid)
+
+    timestamp_nanos = 1245
+    timestamps = [
+        (t, timestamp_nanos) for t in range(1661336507, 1661336606, 10)
+    ]
+
+    img_bufs = send_imgs_fb.send_images(
+        grpc_channel,
+        proj_uuid,
+        camera_uuid,
+        send_imgs_fb.generate_image_ressources(10),
+        timestamps,
+    )
+
+    send_imgs_fb.send_tfs(grpc_channel, proj_uuid, timestamps)
+
+    # extract the sent images
+    images = [Image.Image.GetRootAs(img) for img in img_bufs]
+
+    timestamp_sorted_imgs = sorted(
+        images, key=lambda img: combine_stamps_nanos_fb(img)
+    )
+    timestamp_thresh_imgs = [timestamp_sorted_imgs[1]]
+
+    # retrieve the labelinstances of the bounding boxes
+    label_instances = get_instances_from_imgs_fb(timestamp_thresh_imgs)
+
+    query_builder = FbQuery(
+        grpc_channel,
+        enum_types={
+            EnumFbQuery.POLYGON,
+            EnumFbQuery.CRS_STRING,
+            EnumFbQuery.FULLY_ENCAPSULATED,
+            EnumFbQuery.WITHOUTDATA,
+        },
+    )
+
+    query_builder.set_active_function(
+        EnumFbQuery.CRS_STRING, lambda: "EPSG:3857"
+    )
+
+    query_builder.set_active_function(
+        EnumFbQuery.POLYGON,
+        lambda: Dtypes.Fb.polgon_epsg3857(query_builder.builder),
+    )
+
+    query_builder.assemble_datatype_instance()
+
+    queryinst_builder = FbQueryInstance(
+        grpc_channel, enum_types={EnumFbQueryInstance.QUERY}
+    )
+
+    queryinst_builder.set_active_function(
+        EnumFbQueryInstance.QUERY, lambda: query_builder.datatype_instance
+    )
+
+    queryinst_builder.assemble_datatype_instance()
+
+    instance_uuids_polygon = get_sorted_uuids_per_proj(
+        serv_man.call_get_instances_fb(
+            queryinst_builder.builder, queryinst_builder.datatype_instance
+        )
+    )
+
+    print(instance_uuids_polygon)
+    assert instance_uuids_polygon == sorted(label_instances)