diff --git a/client.html b/client.html
index 36b35cf..e9aeab8 100644
--- a/client.html
+++ b/client.html
@@ -530,6 +530,10 @@
       pingActive();
     });
 
+    canvas.addEventListener('contextmenu', e => {
+      e.preventDefault();
+    });
+
     canvas.addEventListener('mousedown', e => {
       if (!pointerLocked || !isControlling) return;
       sendInput({ type: 'mouse_down', button: e.button + 1 });
@@ -578,6 +582,10 @@
       if (e.key === 'F4' && e.altKey)  { e.preventDefault(); return; }
       if (e.key === 'w' && e.ctrlKey)  { e.preventDefault(); return; }
       if (e.key === 'q' && e.ctrlKey)  { e.preventDefault(); return; }
+      if (e.key === 'v' && e.ctrlKey)  { e.preventDefault(); return; }
+      if (e.key === 'V' && e.ctrlKey)  { e.preventDefault(); return; }
+      if (e.key === ';')               { e.preventDefault(); return; }
+      if (e.key === '"')               { e.preventDefault(); return; }
       if (e.key === 'F11')             { e.preventDefault(); return; }
       if (e.key === 'Escape') {
         if (isControlling) {