diff --git a/packages/testing/src/execution_testing/cli/pytest_commands/fill.py b/packages/testing/src/execution_testing/cli/pytest_commands/fill.py
index 5d58519411..0e65d16ea4 100644
--- a/packages/testing/src/execution_testing/cli/pytest_commands/fill.py
+++ b/packages/testing/src/execution_testing/cli/pytest_commands/fill.py
@@ -291,10 +291,15 @@ def fill(pytest_args: List[str], **kwargs: Any) -> None:
     """Entry point for the fill command."""
     del kwargs
 
+    if not pytest_args:
+        ctx = click.get_current_context()
+        click.echo("Error: The 'fill' command requires a target file or directory.", err=True)
+        click.echo(ctx.get_help())
+        ctx.exit(1)
+
     command = FillCommand()
     command.execute(list(pytest_args))
 
-
 @click.command(
     context_settings={
         "ignore_unknown_options": True,