diff --git a/client/src/components/game.ctrl.btns.jsx b/client/src/components/game.ctrl.btns.jsx
index 9b898345..a374ae80 100644
--- a/client/src/components/game.ctrl.btns.jsx
+++ b/client/src/components/game.ctrl.btns.jsx
@@ -86,7 +86,9 @@ function GameCtrlBtns(args) {
         quit();
     }
 
-    const readyBtn = <button disabled={animating} class="ready" onClick={() => sendReady()}>Ready</button>;
+    const noTargets = !authenticated && game.stack.length === 0;
+
+    const readyBtn = <button disabled={animating || noTargets} class="ready" onClick={() => sendReady()}>Ready</button>;
     const quitBtn = <button disabled={animating} class="quit" onClick={quitClick}>Back</button>;
 
     return (