diff --git a/bin/anvi-get-codon-frequencies b/bin/anvi-get-codon-frequencies
index bab9a96e2..57e584d3a 100755
--- a/bin/anvi-get-codon-frequencies
+++ b/bin/anvi-get-codon-frequencies
@@ -293,7 +293,7 @@ if __name__ == '__main__':
              "acid in each gene or function.")
     groupD.add_argument(
         '--return-amino-acids', default=False, action='store_true',
-        help="Return frequencies of codons encoding the same amino acid.")
+        help="Return frequencies of the sets of codons encoding the same amino acid.")
     groupD.add_argument(
         '--encodings-txt',
         help="Changes to the standard genetic code can be provided in this tab-delimited file of "