diff --git a/src/js/game/key_action_mapper.js b/src/js/game/key_action_mapper.js
index 9c1b2f96..872db1d2 100644
--- a/src/js/game/key_action_mapper.js
+++ b/src/js/game/key_action_mapper.js
@@ -248,6 +248,8 @@ export function getStringForKeyCode(code) {
             return ",";
         case 189:
             return "-";
+        case 190:
+            return ".";
         case 191:
             return "/";
         case 219:
@@ -260,7 +262,9 @@ export function getStringForKeyCode(code) {
             return "'";
     }
 
-    return String.fromCharCode(code);
+    return (48 <= code && code <= 57) || (65 <= code && code <= 90)
+        ? String.fromCharCode(code)
+        : "[" + code + "]";
 }
 
 export class Keybinding {