diff --git a/index.html b/index.html
index 2e8a8c0..546184a 100644
--- a/index.html
+++ b/index.html
@@ -6,32 +6,32 @@
 <meta name="theme-color" content="#0a0305">
 <link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 64 64%22><text y=%2252%22 x=%2250%22 text-anchor=%22middle%22 dominant-baseline=%22middle%22 font-size=%2252%22>🔪</text></svg>">
 <title>MEATSLICER</title>
-<link rel="stylesheet" href="css/style.css?v=51">
+<link rel="stylesheet" href="css/style.css?v=52">
 </head>
 <body>
 <div id="wrap">
   <canvas id="game" width="960" height="640"></canvas>
 </div>
-<script src="js/utils.js?v=51"></script>
-<script src="js/state.js?v=51"></script>
-<script src="js/input.js?v=51"></script>
-<script src="js/sfx.js?v=51"></script>
-<script src="js/sfxbank.js?v=51"></script>
-<script src="js/audio.js?v=51"></script>
-<script src="js/sprites.js?v=51"></script>
-<script src="js/particles.js?v=51"></script>
-<script src="js/weapons.js?v=51"></script>
-<script src="js/bullets.js?v=51"></script>
-<script src="js/pickups.js?v=51"></script>
-<script src="js/items.js?v=51"></script>
-<script src="js/perks.js?v=51"></script>
-<script src="js/enemies.js?v=51"></script>
-<script src="js/bosses.js?v=51"></script>
-<script src="js/rooms.js?v=51"></script>
-<script src="js/player.js?v=51"></script>
-<script src="js/hud.js?v=51"></script>
-<script src="js/help.js?v=51"></script>
-<script src="js/debug.js?v=51"></script>
-<script src="js/main.js?v=51"></script>
+<script src="js/utils.js?v=52"></script>
+<script src="js/state.js?v=52"></script>
+<script src="js/input.js?v=52"></script>
+<script src="js/sfx.js?v=52"></script>
+<script src="js/sfxbank.js?v=52"></script>
+<script src="js/audio.js?v=52"></script>
+<script src="js/sprites.js?v=52"></script>
+<script src="js/particles.js?v=52"></script>
+<script src="js/weapons.js?v=52"></script>
+<script src="js/bullets.js?v=52"></script>
+<script src="js/pickups.js?v=52"></script>
+<script src="js/items.js?v=52"></script>
+<script src="js/perks.js?v=52"></script>
+<script src="js/enemies.js?v=52"></script>
+<script src="js/bosses.js?v=52"></script>
+<script src="js/rooms.js?v=52"></script>
+<script src="js/player.js?v=52"></script>
+<script src="js/hud.js?v=52"></script>
+<script src="js/help.js?v=52"></script>
+<script src="js/debug.js?v=52"></script>
+<script src="js/main.js?v=52"></script>
 </body>
 </html>
diff --git a/js/main.js b/js/main.js
index 0e4fff6..c1bc435 100644
--- a/js/main.js
+++ b/js/main.js
@@ -221,6 +221,10 @@ function update(dt) {
       break;
     case 'levelup':
       updateLevelup();
+      // A click that installed a perk must not carry the held button into play;
+      // updatePlayer fires on Input.mdown, so the very next frame would shoot.
+      // Same mask pattern as the pinned debug console below.
+      if (G.mode !== 'levelup') Input.mdown = false;
       updateParticles(dt);
       break;
     case 'debug':
diff --git a/test/smoke.js b/test/smoke.js
index e9052f3..a0408d0 100644
--- a/test/smoke.js
+++ b/test/smoke.js
@@ -61,7 +61,7 @@ for (const f of files) {
 }
 // const/let top-level bindings live in the context's lexical scope, not on the
 // global object — expose the ones the harness pokes at directly.
-vm.runInContext('Object.assign(this, { G, Input, WEAPONS, Music, Sfx, SfxBank, W, H, WALL, ITEMS, ACTIVES, PERKS, ENEMY_TYPES, BOSS_DEFS, SPRITE_MANIFEST, Sprites, ACTOR_ANIMS, PRESSURE_UNIT, PRESSURE_MIN, PRESSURE_MAX, PRESSURE_DIAL_MIN, PRESSURE_DIAL_MAX, ROOM_SHAPES, ROOM_THEMES, HELP_PAGES, HELP_RENDERERS, SPAWN_WARN, defaultPlayerStats, applyPressureDelta, debugRebuildStats, debugEnabled, DEBUG_PAGES })', sandbox);
+vm.runInContext('Object.assign(this, { G, Input, WEAPONS, Music, Sfx, SfxBank, W, H, WALL, ITEMS, ACTIVES, PERKS, ENEMY_TYPES, BOSS_DEFS, SPRITE_MANIFEST, Sprites, ACTOR_ANIMS, PRESSURE_UNIT, PRESSURE_MIN, PRESSURE_MAX, PRESSURE_DIAL_MIN, PRESSURE_DIAL_MAX, WEAPON_DROP_LOCKOUT, ROOM_SHAPES, ROOM_THEMES, HELP_PAGES, HELP_RENDERERS, SPAWN_WARN, defaultPlayerStats, applyPressureDelta, debugRebuildStats, debugEnabled, DEBUG_PAGES })', sandbox);
 
 let simTime = 0;
 const ctx = sandbox;
@@ -308,6 +308,22 @@ console.log('== rebalanced perks + automatic draft ==');
   ctx.G.autoPerk = false;
   ctx.startRun(); step(3, 16);
 }
+
+console.log('== upgrade card click does not fire ==');
+{
+  ctx.startRun(); step(3, 16); // fresh run in play mode
+  ctx.G.enemies.length = 0; // determinism: nothing can interfere
+  const perksBefore = ctx.G.player.perks.length;
+  ctx.G.pendingLevelups = 1; ctx.G.perkChoices = ctx.PERKS.slice(0, 3); ctx.G.mode = 'levelup';
+  // click inside card 0 (cards start at x=207, y=220, 170x230)
+  ctx.Input.mx = 300; ctx.Input.my = 300;
+  ctx.Input.mpressed = true; ctx.Input.mdown = true;
+  step(6, 16); // first frame consumes the click, the rest run with mdown held
+  check('card click exits the draft into play', ctx.G.mode === 'play');
+  check('card click grants exactly one perk', ctx.G.player.perks.length === perksBefore + 1);
+  check('card click fires no bullet (mdown not carried into play)', ctx.G.bullets.length === 0);
+}
+
 autoDraft = true; // later sections must not get stuck in the perk draft
 
 console.log('== shield heart perk ==');