diff --git a/src/ps2.js b/src/ps2.js
index e1cfe009b1..6a0dcd1f80 100644
--- a/src/ps2.js
+++ b/src/ps2.js
@@ -567,7 +567,7 @@ PS2.prototype.port60_write = function(write_byte)
         }
         else
         {
-            this.kbd_buffer.push(2);
+            this.kbd_buffer.push(1);
         }
     }
     else if(this.next_read_rate)