diff --git a/aosstower/level_b1/nc.py b/aosstower/level_b1/nc.py
index f4a1d41b0b0e94e0667ca62741005110bc816ac9..81a81462a0379b254999b65651cc6cd0c25f4c7e 100644
--- a/aosstower/level_b1/nc.py
+++ b/aosstower/level_b1/nc.py
@@ -465,7 +465,8 @@ def main():
     import argparse
 
     #argparse description
-    argparser = argparse.ArgumentParser(description="Convert level_00 aoss tower data to level_a0")
+    argparser = argparse.ArgumentParser(description="Convert level_00 aoss tower data to level_a0",
+                                        fromfile_prefix_chars='@')
 
     #argparse verbosity info
     argparser.add_argument('-v', '--verbose', action="count", default=int(os.environ.get("VERBOSITY", 2)),
@@ -485,7 +486,7 @@ def main():
     argparser.add_argument('-z', '--zlib', action='store_true', help='compress netCDF file with zlib')
 
     argparser.add_argument("input_files", nargs="+",
-                         help="aoss_tower level_00 paths")
+                         help="aoss_tower level_00 paths. Use @filename to red a list of paths from that file.")
 
     argparser.add_argument('-o', '--output', required=True, nargs="+", help="filename pattern or filename. " +
     "Should be along the lines of <filepath>/aoss_tower.YYYY-MM-DD.nc")