diff --git a/src/command_enum.rs b/src/command_enum.rs
index e3c7e531..18b8bf95 100644
--- a/src/command_enum.rs
+++ b/src/command_enum.rs
@@ -24,7 +24,14 @@ impl CommandEnum {
         }
         if let Some(rename_rule) = &rename {
             match rename_rule.as_str() {
-                "lowercase" => {}
+                "lowercase"
+                | "UPPERCASE"
+                | "PascalCase"
+                | "camelCase"
+                | "snake_case"
+                | "SCREAMING_SNAKE_CASE"
+                | "kebab-case"
+                | "SCREAMING-KEBAB-CASE" => {}
                 _ => return Err("disallowed value".to_owned()),
             }
         }
diff --git a/src/rename_rules.rs b/src/rename_rules.rs
index e1ef4a1b..40bfa9e9 100644
--- a/src/rename_rules.rs
+++ b/src/rename_rules.rs
@@ -21,7 +21,7 @@ pub fn rename_by_rule(input: &str, rule: &str) -> String {
         "SCREAMING_SNAKE_CASE" => input.to_shouty_snake_case(),
         "kebab-case" => input.to_kebab_case(),
         "SCREAMING-KEBAB-CASE" => input.to_shouty_kebab_case(),
-        _ => input.to_string(),
+        _ => rule.to_string(),
     }
 }