diff --git a/java/res/values-xlarge-land/dimens.xml b/java/res/values-xlarge-land/dimens.xml
index ade1256..65fd29d 100644
--- a/java/res/values-xlarge-land/dimens.xml
+++ b/java/res/values-xlarge-land/dimens.xml
@@ -21,6 +21,7 @@
 <resources>
     <!-- keyboardHeight = key_height*4 + key_bottom_gap*3, key_height=14.5mm -->
     <dimen name="keyboardHeight">58.0mm</dimen>
+    <fraction name="minKeyboardHeight">45%p</fraction>
     <!-- key_height + key_bottom_gap = popup_key_height -->
     <!-- <dimen name="key_height">14.5mm</dimen> -->
     <dimen name="key_bottom_gap">0.0mm</dimen>
diff --git a/java/res/values-xlarge/dimens.xml b/java/res/values-xlarge/dimens.xml
index 2796b6f..37cfc9d 100644
--- a/java/res/values-xlarge/dimens.xml
+++ b/java/res/values-xlarge/dimens.xml
@@ -21,6 +21,7 @@
 <resources>
     <!-- keyboardHeight = key_height*4 + key_bottom_gap*3, key_height=12mm -->
     <dimen name="keyboardHeight">48.0mm</dimen>
+    <fraction name="minKeyboardHeight">-35.0%p</fraction>
     <!-- key_height + key_bottom_gap = popup_key_height -->
     <!-- <dimen name="key_height">14.5mm</dimen> -->
     <dimen name="key_bottom_gap">0.0mm</dimen>