diff --git a/vendor.prop b/vendor.prop
index 01ca6c6..eb44be7 100644
--- a/vendor.prop
+++ b/vendor.prop
@@ -174,9 +174,9 @@ ro.surface_flinger.has_wide_color_display=true
 ro.surface_flinger.max_frame_buffer_acquired_buffers=3
 ro.surface_flinger.max_virtual_display_dimension=4096
 ro.surface_flinger.protected_contents=true
-ro.surface_flinger.set_touch_timer_ms=200
+ro.surface_flinger.set_touch_timer_ms?=200
 ro.surface_flinger.use_color_management=true
-ro.surface_flinger.use_content_detection_for_refresh_rate=true
+ro.surface_flinger.use_content_detection_for_refresh_rate?=true
 ro.surface_flinger.wcg_composition_dataspace=143261696
 ro.vendor.sf.enable_fb_scaling=1
 vendor.display.comp_mask=0