diff --git a/crates/nu-cmd-lang/src/core_commands/do_.rs b/crates/nu-cmd-lang/src/core_commands/do_.rs
index 4f0bd245d2..adf13cc0bb 100644
--- a/crates/nu-cmd-lang/src/core_commands/do_.rs
+++ b/crates/nu-cmd-lang/src/core_commands/do_.rs
@@ -23,11 +23,7 @@ impl Command for Do {
 
     fn signature(&self) -> Signature {
         Signature::build("do")
-            .required(
-                "closure",
-                SyntaxShape::OneOf(vec![SyntaxShape::Closure(None), SyntaxShape::Any]),
-                "The closure to run.",
-            )
+            .required("closure", SyntaxShape::Closure(None), "The closure to run.")
             .input_output_types(vec![(Type::Any, Type::Any)])
             .switch(
                 "ignore-errors",
diff --git a/crates/nu-std/tests/test_asserts.nu b/crates/nu-std/tests/test_asserts.nu
index b155022473..2447dfda1e 100644
--- a/crates/nu-std/tests/test_asserts.nu
+++ b/crates/nu-std/tests/test_asserts.nu
@@ -38,8 +38,8 @@ def assert_error [] {
     assert error $failing_code
 
     let good_code = {|| }
-    let assert_error_raised = (try { do assert $good_code; false } catch { true })
-    assert $assert_error_raised "The assert error should raise an error if there is no error in the executed code."
+    let assert_error_raised = (try { assert error $good_code; false } catch { true })
+    assert $assert_error_raised "The assert error should be false if there is no error in the executed code."
 }
 
 #[test]