diff --git a/src/astra/frontend/telemetry_view.py b/src/astra/frontend/telemetry_view.py
index 4f76109..e314aa7 100644
--- a/src/astra/frontend/telemetry_view.py
+++ b/src/astra/frontend/telemetry_view.py
@@ -145,7 +145,7 @@ def refresh_data_table(self) -> None:
         This method wipes the data from the dashboard table and re-inserts
         the new values
         """
-        if self.controller.get_table_entries():
+        if self.controller.get_table_entries() is not None:
             self.change_frame_navigation_text()
             for item in self.dashboard_table.get_children():
                 self.dashboard_table.delete(item)
diff --git a/src/astra/usecase/request_receiver.py b/src/astra/usecase/request_receiver.py
index 280fa50..c0d0345 100644
--- a/src/astra/usecase/request_receiver.py
+++ b/src/astra/usecase/request_receiver.py
@@ -351,13 +351,13 @@ def load_file(cls, file: str, dm: DataManager) -> None:
         """
 
     @classmethod
-    def get_table_entries(cls) -> list[list]:
+    def get_table_entries(cls) -> list[list] | None:
         """
         Returns the table entries from the previous call to <create> or <update>
 
         :return: the table entries from the previous call to <create> or <update>
         """
         if cls.previous_data is None:
-            return []
+            return None
         else:
             return cls.previous_data.table