diff --git a/crates/nu-command/src/deprecated/let_env.rs b/crates/nu-command/src/deprecated/let_env.rs
index 657e1f006..36192b592 100644
--- a/crates/nu-command/src/deprecated/let_env.rs
+++ b/crates/nu-command/src/deprecated/let_env.rs
@@ -14,8 +14,8 @@ impl Command for LetEnvDeprecated {
         Signature::build(self.name())
             .input_output_types(vec![(Type::Nothing, Type::Nothing)])
             .allow_variants_without_examples(true)
-            .required("var_name", SyntaxShape::String, "variable name")
-            .required(
+            .optional("var_name", SyntaxShape::String, "variable name")
+            .optional(
                 "initial_value",
                 SyntaxShape::Keyword(b"=".to_vec(), Box::new(SyntaxShape::MathExpression)),
                 "equals sign followed by value",