diff --git a/wordfreq_builder/wordfreq_builder/cli/tokenize_reddit.py b/wordfreq_builder/wordfreq_builder/cli/tokenize_reddit.py
index c93af67..6a275b3 100644
--- a/wordfreq_builder/wordfreq_builder/cli/tokenize_reddit.py
+++ b/wordfreq_builder/wordfreq_builder/cli/tokenize_reddit.py
@@ -4,7 +4,7 @@ import argparse
 
 def main():
     parser = argparse.ArgumentParser()
-    parser.add_argument('filename', help='filename of input file containing one tweet per line')
+    parser.add_argument('filename', help='filename of input file containing one comment per line')
     parser.add_argument('outprefix', help='prefix of output filenames')
     args = parser.parse_args()
     tokenize_by_language(args.filename, args.outprefix, tokenizer=cld2_reddit_tokenizer)