diff --git a/gfe_integration_tests/sdram_edge_tests/test_constant_internal/sdram_splitter_internal.py b/gfe_integration_tests/sdram_edge_tests/test_constant_internal/sdram_splitter_internal.py
index 4fac689a..1a0b92e8 100644
--- a/gfe_integration_tests/sdram_edge_tests/test_constant_internal/sdram_splitter_internal.py
+++ b/gfe_integration_tests/sdram_edge_tests/test_constant_internal/sdram_splitter_internal.py
@@ -47,11 +47,13 @@ def _post_vertex(self):
         return self.__post_vertex
 
     @overrides(AbstractSplitterCommon.get_out_going_vertices)
-    def get_out_going_vertices(self, partition_id: str) -> List[SDRAMMachineVertex]:
+    def get_out_going_vertices(self, partition_id: str) -> List[
+            SDRAMMachineVertex]:
         return [self._pre_vertex]
 
     @overrides(AbstractSplitterCommon.get_in_coming_vertices)
-    def get_in_coming_vertices(self, partition_id: str) -> list[SDRAMMachineVertex]:
+    def get_in_coming_vertices(self, partition_id: str) -> List[
+            SDRAMMachineVertex]:
         return [self._post_vertex]
 
     def create_machine_vertices(self, chip_counter):