diff --git a/proxmox-api/src/api_type.rs b/proxmox-api/src/api_type.rs
index 88bce17f..585fc143 100644
--- a/proxmox-api/src/api_type.rs
+++ b/proxmox-api/src/api_type.rs
@@ -253,8 +253,9 @@ macro_rules! unconstrained_api_type {
 }
 
 unconstrained_api_type! {Value} // basically our API's "any" type
-unconstrained_api_type! {&str}
-unconstrained_api_type! {String, isize, usize, i64, u64, i32, u32, i16, u16, i8, u8, f64, f32}
+unconstrained_api_type! {String, &str}
+unconstrained_api_type! {bool}
+unconstrained_api_type! {isize, usize, i64, u64, i32, u32, i16, u16, i8, u8, f64, f32}
 unconstrained_api_type! {Vec<String>}
 
 // Raw return types are also okay: