diff --git a/overlay/SystemUIResDm3q/res/values/dimens.xml b/overlay/SystemUIResDm3q/res/values/dimens.xml
index 0f92daf..0a5fc54 100644
--- a/overlay/SystemUIResDm3q/res/values/dimens.xml
+++ b/overlay/SystemUIResDm3q/res/values/dimens.xml
@@ -18,4 +18,7 @@
     <!-- Location on the screen of the center of the fingerprint sensor. -->
     <dimen name="physical_fingerprint_sensor_center_screen_location_y">1737.0px</dimen>
 
+    <!-- Pixel pitch of the device. um/px -->
+    <item name="pixel_pitch" format="float" type="dimen">50.69</item>
+
 </resources>