diff --git a/src/opt.rs b/src/opt.rs
index 5fdcdf9..ef02e87 100644
--- a/src/opt.rs
+++ b/src/opt.rs
@@ -42,9 +42,12 @@ impl<T> OwnRef<'_, T> {
 
 #[macro_export]
 macro_rules! _to_opt_own_ref {
-	($var:ident) => {
+	($var:ident) => { $crate::_to_opt_own_ref!(# $var) };
+	(mut $var:ident) => { $crate::_to_opt_own_ref!(mut # $var) };
+
+	($($mut:ident)? # $var:ident) => {
 		let mut $var = Some($var);
-		let $var = OwnRef::from_option(&mut $var);
+		let $($mut)? $var = OwnRef::from_option(&mut $var);
 	};
 }
 
diff --git a/src/ptr.rs b/src/ptr.rs
index 5f0d2a7..fdcad87 100644
--- a/src/ptr.rs
+++ b/src/ptr.rs
@@ -68,9 +68,12 @@ impl OwnRef<'_, dyn std::any::Any> {
 
 #[macro_export]
 macro_rules! _to_ptr_own_ref {
-	($var:ident) => {
+	($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 $var = unsafe { OwnRef::from_manually_drop(&mut $var) };
+		let $($mut)? $var = unsafe { OwnRef::from_manually_drop(&mut $var) };
 	};
 }