diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13371a47f9..54f83b1e83 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Unreleased
 
+- On macOS, fixed duplicate key events when pressing `Command + Period`.
 - Added serde serialization to `os::unix::XWindowType`.
 - **Breaking:** `image` crate upgraded to 0.21. This is exposed as part of the `icon_loading` API.
 
diff --git a/src/platform/macos/events_loop.rs b/src/platform/macos/events_loop.rs
index ca1ff1701d..96d601dd01 100644
--- a/src/platform/macos/events_loop.rs
+++ b/src/platform/macos/events_loop.rs
@@ -1,5 +1,6 @@
 use {ControlFlow, EventsLoopClosed};
 use cocoa::{self, appkit, foundation};
+use cocoa::foundation::NSString;
 use cocoa::appkit::{NSApplication, NSEvent, NSEventMask, NSEventModifierFlags, NSEventPhase, NSView, NSWindow};
 use events::{self, ElementState, Event, TouchPhase, WindowEvent, DeviceEvent, ModifiersState, KeyboardInput};
 use std::collections::VecDeque;
@@ -328,8 +329,9 @@ impl EventsLoop {
             // KeyUp, and the above trick does not appear to work.
             appkit::NSKeyDown => {
                 let modifiers = event_mods(ns_event);
-                let keycode = NSEvent::keyCode(ns_event);
-                if modifiers.logo && keycode == 47 {
+                let characters = NSEvent::characters(ns_event);
+                let is_period = characters.isEqualToString(".");
+                if modifiers.logo && is_period {
                     modifier_event(ns_event, NSEventModifierFlags::NSCommandKeyMask, false)
                         .map(into_event)
                 } else {