diff --git a/src/mikrokondo_tools/cli/samplesheet/__init__.py b/src/mikrokondo_tools/cli/samplesheet/__init__.py
index f06c18f..f7ca651 100644
--- a/src/mikrokondo_tools/cli/samplesheet/__init__.py
+++ b/src/mikrokondo_tools/cli/samplesheet/__init__.py
@@ -11,7 +11,7 @@
 @click.option("-1", "--read-1-suffix", "read_1", type=click.STRING, help="A suffix to identify read 1", default="_R1_")
 @click.option("-2", "--read-2-suffix", "read_2", type=click.STRING, help="A suffix to identify read 2", default="_R2_")
 @click.option("-s", "--schema-input", "schema_input", type=click.Path(), default=None, help="An optional schema_input.json file pre-downloaded for mikrokondo.")
-@click.argument("sample_directory", type=click.Path(exists=True))
+@click.argument("input_directory", type=click.Path(exists=True))
 def samplesheet(output_sheet, read_1, read_2, input_directory, schema_input):
     logger = u.get_logger()
     if output_sheet.is_file():