diff --git a/window/src/os/macos/window.rs b/window/src/os/macos/window.rs
index cfbc19d64..89f0ce5fc 100644
--- a/window/src/os/macos/window.rs
+++ b/window/src/os/macos/window.rs
@@ -405,10 +405,6 @@ impl Window {
 
             window.setReleasedWhenClosed_(NO);
             window.setOpaque_(NO);
-            // Turn off the window shadow, because when the background is transparent
-            // having the shadow enabled seems to correlate with ghostly remnants
-            // see: https://github.com/wez/wezterm/issues/310
-            window.setHasShadow_(NO);
             let ns_color: id = msg_send![Class::get("NSColor").unwrap(), alloc];
             window.setBackgroundColor_(cocoa::appkit::NSColor::clearColor(ns_color));
 
@@ -667,6 +663,10 @@ impl WindowOpsMut for WindowInner {
     fn invalidate(&mut self) {
         unsafe {
             let () = msg_send![*self.view, setNeedsDisplay: YES];
+            // Explicitly invalidate the window shadow to avoid
+            // leaving behind ghost remnants!
+            // see: https://github.com/wez/wezterm/issues/310
+            NSWindow::invalidateShadow(*self.window);
         }
     }
     fn set_title(&mut self, title: &str) {