diff --git a/app/src/main/res/layout/activity_signin.xml b/app/src/main/res/layout/activity_signin.xml
index 6b37c3c..831e7ad 100644
--- a/app/src/main/res/layout/activity_signin.xml
+++ b/app/src/main/res/layout/activity_signin.xml
@@ -36,6 +36,7 @@
         android:ems="10"
         android:hint="@string/password"
         android:inputType="textPassword"
+        android:digits="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.445"
         app:layout_constraintStart_toStartOf="parent"