Rebind ⌘Space to a third-party launcher without breaking Spotlight

⌘Space is the most expensive piece of real estate on a Mac keyboard. Apple has owned it for Spotlight since Tiger; most third-party launchers want it back. Rebinding the hotkey is a 30-second job — but doing it badly is a five-minute job, because macOS will silently resolve the conflict in a way that leaves you with neither launcher responding. This guide is the careful version: detach Spotlight's claim first, assign the new launcher second, verify both still do what they should.

What the hotkey actually controls

⌘Space, by default, is bound to "Show Spotlight search" in System Settings → Keyboard → Keyboard Shortcuts → Spotlight. There is a second related shortcut in the same pane: "Show Finder search window" (⌥⌘Space by default). These are independent. Most third-party launchers want the first one; the second one stays with Finder.

Other hotkeys live nearby and are easy to confuse:

⌃Space — input source switcher.
Fn / 🎤 — dictation (single tap).
Hold Fn — Siri (configurable).
Globe key — Emoji & Symbols on newer keyboards.

None of these conflict with ⌘Space, but if your hands get the wrong one a few times it can feel like the launcher is broken. Worth knowing the neighbours.

Why the order matters

If you assign ⌘Space to a third-party launcher while Spotlight still owns it, macOS resolves the conflict by giving the launcher priority but quietly logging a warning. In practice, you will sometimes see Spotlight, sometimes see your new launcher, and sometimes see nothing — depending on the order of process startup after a reboot. The fix is always the same: clear Spotlight's binding first, then assign the new one.

This is a documented behaviour, not a bug. Apple's keyboard shortcuts guide calls out that custom shortcuts can override system ones, but recommends disabling the conflicting system shortcut explicitly.

Step 1 — Detach Spotlight from ⌘Space

Open System Settings → Keyboard → Keyboard Shortcuts → Spotlight. Uncheck "Show Spotlight search". macOS releases the hotkey immediately. The Spotlight indexer keeps doing its job; Finder search, Mail search, and Photos search keep working. You have only detached the floating Spotlight panel from the keyboard.

You can verify the release in Terminal:

defaults read com.apple.symbolichotkeys AppleSymbolicHotKeys | grep -A 2 '"64" ='

(64 is the symbolic hotkey ID for "Show Spotlight search".) The enabled = 0; line confirms the binding is off.

Step 2 — Assign the launcher

Open your chosen launcher's preferences and set its activation hotkey to ⌘Space. Each launcher names this setting slightly differently:

CmdSpace — CmdSpace menu → Settings → Hotkey → Activation hotkey.
Raycast — Raycast → Preferences → General → Raycast Hotkey.
Alfred — Alfred Preferences → General → Alfred Hotkey.
Quicksilver — Preferences → General → Hot Key.
Ueli — Settings → Hotkey.

Most launchers will warn if another app still holds the shortcut and offer to override. If you completed Step 1 correctly, no warning should appear. If it does, double-check that the System Settings checkbox is actually off — sometimes the change does not commit until you click into another pane.

Step 3 — Verify

Press ⌘Space. Your new launcher should open. No flicker, no delay, no Spotlight in the foreground for a frame.

If both open, or neither does, the most likely cause is a stale binding cached by hidd. Restart the input subsystem cleanly:

sudo killall hidd

hidd respawns immediately. The hotkey re-registers from scratch. Try again.

If after the restart the launcher still does not open, the binding inside the launcher itself did not stick. Open its preferences again, set the hotkey to something obviously different (⌥⌘L, say), confirm that works, then change it back to ⌘Space.

What to do if you regret it

Every step is reversible in under a minute. Re-check the Spotlight checkbox in System Settings → Keyboard → Keyboard Shortcuts → Spotlight, clear the launcher's binding, and you are back to the macOS default. Nothing on disk has changed; only the keyboard mapping was reconfigured.

Keeping both available

The most useful configuration most people land on is not "Spotlight or the new launcher" but "both, with different hotkeys":

⌘Space → your new launcher (CmdSpace, Raycast, Alfred, whichever).
⌥⌘Space → Spotlight (or any other free combo).

This gives you the new launcher under the default muscle-memory hotkey and keeps Spotlight one keystroke away for the cases where it is still the right tool — usually finding a setting buried somewhere in System Settings, or pulling up a recent Mail thread that you do not feel like switching to Mail to search.

To rebind Spotlight to a non-default combo, re-check the System Settings checkbox and then double-click the shortcut beside it to enter a new one.

What this changes about your workflow

On paper, very little. ⌘Space still opens a search box. In practice, the difference shows up in three places.

1. Result quality on noisy days. When Spotlight is rebuilding (which on Tahoe 26 happens more often than it should — see Michael Tsai's running notes on Spotlight), the panel returns sparse or empty results. A launcher with its own index — like CmdSpace's local-only Rust-backed scanner — keeps working. The hotkey feels the same; the results stop disappearing.

2. Command shortcuts. Most third-party launchers ship a command vocabulary that Spotlight does not have. kill 3000, calc 1024 * 7, :emoji rocket, clip, dict mercurial — depending on the launcher, these become first-class. They are why people rebind in the first place.

3. Network surface. Spotlight on a default install talks to Apple for Suggestions, web results, and (if Apple Intelligence is on) inline answers. A launcher like CmdSpace has zero outbound network calls. If that matters to you, the rebind is the cheapest way to remove a network surface from your daily workflow. The Spotlight privacy explainer covers what each Spotlight surface actually sends.

A short recommendation

If you have never rebound ⌘Space, try it for a week with whatever launcher you find most appealing. The first three days feel wrong because your hands keep expecting Spotlight; by day five it stops registering. After a week you will know whether the new ergonomics earn the hotkey. If they do not, the rollback above takes 30 seconds.

If you want a specific recommendation: CmdSpace is what we ship — local-only, keyboard-first, $29 one-time, no subscription, 60-day free trial. The Spotlight-to-CmdSpace migration guide walks through the full setup end to end. Raycast and Alfred are also excellent choices with different trade-offs; we have a separate comparison post if you want to weigh them side-by-side.