diff --git a/test_runner/fixtures/pageserver/common_types.py b/test_runner/fixtures/pageserver/common_types.py
index 0e068db593..0a92883e96 100644
--- a/test_runner/fixtures/pageserver/common_types.py
+++ b/test_runner/fixtures/pageserver/common_types.py
@@ -105,7 +105,7 @@ def parse_layer_file_name(file_name: str) -> LayerName:
     except InvalidFileName:
         pass
 
-    raise InvalidFileName("neither image nor delta layer")
+    raise InvalidFileName(f"neither image nor delta layer: {file_name}")
 
 
 def is_future_layer(layer_file_name: LayerName, disk_consistent_lsn: Lsn):
diff --git a/test_runner/regress/test_pageserver_secondary.py b/test_runner/regress/test_pageserver_secondary.py
index c73a592d98..d03d05d33d 100644
--- a/test_runner/regress/test_pageserver_secondary.py
+++ b/test_runner/regress/test_pageserver_secondary.py
@@ -61,7 +61,7 @@ def evict_random_layers(
     )
     client = pageserver.http_client()
     for layer in initial_local_layers:
-        if "ephemeral" in layer.name or "temp_download" in layer.name:
+        if "ephemeral" in layer.name or "temp_download" in layer.name or ".___temp" in layer.name:
             continue
 
         layer_name = parse_layer_file_name(layer.name)