diff --git a/test_runner/fixtures/pageserver/allowed_errors.py b/test_runner/fixtures/pageserver/allowed_errors.py
index 74c6bddf23..8ff4341cc0 100755
--- a/test_runner/fixtures/pageserver/allowed_errors.py
+++ b/test_runner/fixtures/pageserver/allowed_errors.py
@@ -82,6 +82,11 @@ DEFAULT_PAGESERVER_ALLOWED_ERRORS = (
     # During shutdown, DownloadError::Cancelled may be logged as an error.  Cleaning this
     # up is tracked in https://github.com/neondatabase/neon/issues/6096
     ".*Cancelled, shutting down.*",
+    # Open layers are only rolled at Lsn boundaries to avoid name clashses.
+    # Hence, we can overshoot the soft limit set by checkpoint distance.
+    # This is especially pronounced in tests that set small checkpoint
+    # distances.
+    ".*Flushed oversized open layer with size.*",
 )