diff --git a/src/ptr.rs b/src/ptr.rs
index 26f4f3f..2f6d143 100644
--- a/src/ptr.rs
+++ b/src/ptr.rs
@@ -92,14 +92,19 @@ impl OwnRef<'_, dyn Any> {
 	}
 }
 
+#[doc(hidden)]
+pub mod _refs {
+	pub use std::mem::ManuallyDrop;
+}
+
 #[macro_export]
 macro_rules! _to_ptr_own_ref {
 	($var:ident) => { $crate::_to_ptr_own_ref!(# $var) };
 	(mut $var:ident) => { $crate::_to_ptr_own_ref!(mut # $var) };
 
 	($($mut:ident)? # $var:ident) => {
-		let mut $var = ManuallyDrop::new($var);
-		let $($mut)? $var = unsafe { OwnRef::from_manually_drop(&mut $var) };
+		let mut $var = $crate::ptr::_refs::ManuallyDrop::new($var);
+		let $($mut)? $var = unsafe { $crate::ptr::OwnRef::from_manually_drop(&mut $var) };
 	};
 }