diff --git a/src/commands/cd.rs b/src/commands/cd.rs
index dab6f3548..718f2846f 100644
--- a/src/commands/cd.rs
+++ b/src/commands/cd.rs
@@ -18,7 +18,7 @@ impl WholeStreamCommand for CD {
     }
 
     fn signature(&self) -> Signature {
-        Signature::build("cd").required("directory", SyntaxType::Path)
+        Signature::build("cd").optional("directory", SyntaxType::Path)
     }
 }