diff --git a/src/nwp_consumer/internal/repositories/model_repositories/test_ecmwf_realtime.py b/src/nwp_consumer/internal/repositories/model_repositories/test_ecmwf_realtime.py
index 65d18b74..50de560a 100644
--- a/src/nwp_consumer/internal/repositories/model_repositories/test_ecmwf_realtime.py
+++ b/src/nwp_consumer/internal/repositories/model_repositories/test_ecmwf_realtime.py
@@ -74,12 +74,17 @@ class TestCase:
         tests: list[TestCase] = [
             TestCase(
                 name="valid_filename",
-                filename="A2D10251200102516001",
+                filename=f"A2D{test_it:%m%d%H%M}102516001",
                 expected=True,
             ),
             TestCase(
-                name="invalid_filename",
-                filename="GGC10251200102516002",
+                name="invalid_init_time",
+                filename="A2D09250600102516002",
+                expected=False,
+            ),
+            TestCase(
+                name="invalid_prefix",
+                filename=f"GGC{test_it:%m%d%H%M}102516002",
                 expected=False,
             ),
             TestCase(