diff --git a/xnat_ingest/cli/upload.py b/xnat_ingest/cli/upload.py
index c8a9fb0..04f4282 100644
--- a/xnat_ingest/cli/upload.py
+++ b/xnat_ingest/cli/upload.py
@@ -104,7 +104,7 @@
         "specified in a column or not. Specified using the scan types IANA mime-type or "
         "fileformats \"mime-like\" (see https://arcanaframework.github.io/fileformats/), "
         "e.g. 'application/json', 'medimage/dicom-series', "
-        "'image/jpeg'). Use 'core/file-set' to include all file-types in the session"
+        "'image/jpeg'). Use 'all' to include all file-types in the session"
     ),
 )
 @click.option(
diff --git a/xnat_ingest/session.py b/xnat_ingest/session.py
index dfcaa1f..3a53531 100644
--- a/xnat_ingest/session.py
+++ b/xnat_ingest/session.py
@@ -138,7 +138,10 @@ def select_resources(
 
         uploaded = set()
         for mime_like in always_include:
-            fileformat = from_mime(mime_like)
+            if mime_like == "all":
+                fileformat = FileSet
+            else:
+                fileformat = from_mime(mime_like)
             for scan in self.scans.values():
                 for resource_name, fileset in scan.resources.items():
                     if isinstance(fileset, fileformat):