diff --git a/objc2-foundation/src/macros.rs b/objc2-foundation/src/macros.rs
index fbbb2a0b9..18599beba 100644
--- a/objc2-foundation/src/macros.rs
+++ b/objc2-foundation/src/macros.rs
@@ -295,8 +295,8 @@ macro_rules! __def_fn {
     // some of that specialization though!
     {} => {};
     {
-        #[sel($($sel:tt)+)]
         $(#[$m:meta])*
+        #sel!($($sel:tt)+)
         $v:vis fn $name:ident(
             $(&$self:ident)?
             $(&mut $mut_self:ident)?
@@ -329,8 +329,8 @@ macro_rules! __def_fn {
         }
     };
     {
-        #[sel($($sel:tt)+)]
         $(#[$m:meta])*
+        #sel!($($sel:tt)+)
         $v:vis fn $name:ident(
             $(&$self:ident)?
             $(&mut $mut_self:ident)?
@@ -363,8 +363,8 @@ macro_rules! __def_fn {
         }
     };
     {
-        #[sel($($sel:tt)+)]
         $(#[$m:meta])*
+        #sel!($($sel:tt)+)
         $v:vis fn $name:ident(
             $(&$self:ident)?
             $(&mut $mut_self:ident)?
@@ -397,8 +397,8 @@ macro_rules! __def_fn {
         }
     };
     {
-        #[sel($($sel:tt)+)]
         $(#[$m:meta])*
+        #sel!($($sel:tt)+)
         $v:vis fn $name:ident(
             $(&$self:ident)?
             $(&mut $mut_self:ident)?
diff --git a/objc2-foundation/src/mutable_string.rs b/objc2-foundation/src/mutable_string.rs
index 5834ff556..75ca9eb9a 100644
--- a/objc2-foundation/src/mutable_string.rs
+++ b/objc2-foundation/src/mutable_string.rs
@@ -14,6 +14,12 @@ extern_class! {
     /// See [Apple's documentation](https://developer.apple.com/documentation/foundation/nsmutablestring?language=objc).
     #[derive(PartialEq, Eq, Hash)]
     unsafe pub struct NSMutableString: NSString, NSObject;
+
+    unsafe impl {
+        /// Construct an empty [`NSMutableString`].
+        #sel!(new)
+        pub fn new() -> Id<Self, Owned>;
+    }
 }
 
 // TODO: SAFETY
@@ -22,11 +28,6 @@ unsafe impl Send for NSMutableString {}
 
 /// Creating mutable strings.
 impl NSMutableString {
-    unsafe_def_fn! {
-        /// Construct an empty [`NSMutableString`].
-        pub fn new -> Owned;
-    }
-
     /// Creates a new [`NSMutableString`] by copying the given string slice.
     #[doc(alias = "initWithBytes:length:encoding:")]
     #[allow(clippy::should_implement_trait)] // Not really sure of a better name
diff --git a/objc2-foundation/src/object.rs b/objc2-foundation/src/object.rs
index 919633472..7c2adf8b4 100644
--- a/objc2-foundation/src/object.rs
+++ b/objc2-foundation/src/object.rs
@@ -11,20 +11,20 @@ __inner_extern_class! {
     unsafe pub struct NSObject<>: Object {}
 
     unsafe impl {
-        #[sel(new)]
+        #sel!(new)
         pub fn new() -> Id<Self, Owned>;
 
-        #[sel(hash)]
+        #sel!(hash)
         pub fn hash_code(&self) -> usize;
 
-        #[sel(isEqual:)]
+        #sel!(isEqual:)
         pub fn is_equal(&self, other: &NSObject) -> bool;
 
         // TODO: Verify that description always returns a non-null string
-        #[sel(description)]
+        #sel!(description)
         pub fn description(&self) -> Id<NSString, Shared>;
 
-        #[sel(isKindOfClass:)]
+        #sel!(isKindOfClass:)
         pub fn is_kind_of(&self, cls: &Class) -> bool;
     }
 }