diff --git a/src/hdmf/data_utils.py b/src/hdmf/data_utils.py
index 3781abe8e..941c3f8c7 100644
--- a/src/hdmf/data_utils.py
+++ b/src/hdmf/data_utils.py
@@ -290,7 +290,7 @@ def __init__(self, **kwargs):
         dict(
             name="chunk_mb",
             type=(float, int),
-            doc="Size of the HDF5 chunk in megabytes. Recommended to be less than 1MB.",
+            doc="Size of the HDF5 chunk in megabytes.",
             default=None,
         )
     )