diff --git a/modules/lock/Pam.qml b/modules/lock/Pam.qml
index 94832b20..f4c61747 100644
--- a/modules/lock/Pam.qml
+++ b/modules/lock/Pam.qml
@@ -31,8 +31,8 @@ Scope {
             } else {
                 buffer = buffer.slice(0, -1);
             }
-        } else if (" abcdefghijklmnopqrstuvwxyz1234567890`~!@#$%^&*()-_=+[{]}\\|;:'\",<.>/?".includes(event.text.toLowerCase())) {
-            // No illegal characters (you are insane if you use unicode in your password)
+        } else if (/^[^\x00-\x1F\x7F-\x9F]+$/.test(event.text)) {
+            // Allow anything except control characters
             buffer += event.text;
         }
     }