diff --git a/src/commands/help.rs b/src/commands/help.rs
index c8b22898da..e8c458caad 100644
--- a/src/commands/help.rs
+++ b/src/commands/help.rs
@@ -28,11 +28,11 @@ impl PerItemCommand for Help {
     ) -> Result<OutputStream, ShellError> {
         let tag = call_info.name_tag;
 
-        match call_info.args.expect_nth(0)? {
-            Tagged {
+        match call_info.args.nth(0) {
+            Some(Tagged {
                 item: Value::Primitive(Primitive::String(document)),
                 tag,
-            } => {
+            }) => {
                 let mut help = VecDeque::new();
                 if document == "commands" {
                     let mut sorted_names = registry.names();
diff --git a/src/commands/nth.rs b/src/commands/nth.rs
index bf397e1bcf..18bb6f23af 100644
--- a/src/commands/nth.rs
+++ b/src/commands/nth.rs
@@ -16,7 +16,7 @@ impl WholeStreamCommand for Nth {
     }
 
     fn signature(&self) -> Signature {
-        Signature::build("nth").required("amount", SyntaxShape::Any)
+        Signature::build("nth").required("row number", SyntaxShape::Any)
     }
 
     fn usage(&self) -> &str {