diff --git a/src/macos/mod.rs b/src/macos/mod.rs
index 1164165..02a0e36 100644
--- a/src/macos/mod.rs
+++ b/src/macos/mod.rs
@@ -2,11 +2,16 @@ mod keyboard;
 mod view;
 mod window;
 
-use cocoa::foundation::NSUInteger;
 pub use window::*;
 
-const NSDragOperationNone: NSUInteger = 0;
-const NSDragOperationCopy: NSUInteger = 1;
-const NSDragOperationLink: NSUInteger = 2;
-const NSDragOperationGeneric: NSUInteger = 4;
-const NSDragOperationMove: NSUInteger = 16;
+#[allow(non_upper_case_globals)]
+mod consts {
+    use cocoa::foundation::NSUInteger;
+
+    pub const NSDragOperationNone: NSUInteger = 0;
+    pub const NSDragOperationCopy: NSUInteger = 1;
+    pub const NSDragOperationLink: NSUInteger = 2;
+    pub const NSDragOperationGeneric: NSUInteger = 4;
+    pub const NSDragOperationMove: NSUInteger = 16;
+}
+use consts::*;
diff --git a/src/macos/view.rs b/src/macos/view.rs
index 80abdab..4eaa374 100644
--- a/src/macos/view.rs
+++ b/src/macos/view.rs
@@ -467,7 +467,7 @@ extern "C" fn dragging_updated(this: &Object, _sel: Sel, sender: id) -> NSUInteg
     on_event(state, event)
 }
 
-extern "C" fn prepare_for_drag_operation(_this: &Object, _sel: Sel, sender: id) -> BOOL {
+extern "C" fn prepare_for_drag_operation(_this: &Object, _sel: Sel, _sender: id) -> BOOL {
     // Always accept drag operation if we get this far
     // This function won't be called unless dragging_entered/updated
     // has returned an acceptable operation
@@ -492,10 +492,8 @@ extern "C" fn perform_drag_operation(this: &Object, _sel: Sel, sender: id) -> BO
     }
 }
 
-extern "C" fn dragging_exited(this: &Object, _sel: Sel, sender: id) {
+extern "C" fn dragging_exited(this: &Object, _sel: Sel, _sender: id) {
     let state: &mut WindowState = unsafe { WindowState::from_field(this) };
-    let modifiers = state.keyboard_state().last_mods();
-    let drop_data = get_drop_data(sender);
 
     on_event(state, MouseEvent::DragLeft);
 }