diff --git a/device-husky.mk b/device-husky.mk
index ec26da3..c7e0d53 100644
--- a/device-husky.mk
+++ b/device-husky.mk
@@ -401,3 +401,7 @@ PRODUCT_VENDOR_PROPERTIES += \
 # Enable DeviceAsWebcam support
 PRODUCT_VENDOR_PROPERTIES += \
     ro.usb.uvc.enabled=true
+
+# DisplayPort should be disabled by default (b/300167292)
+PRODUCT_VENDOR_PROPERTIES += \
+       persist.vendor.usb.displayport.enabled=0
diff --git a/device-shiba.mk b/device-shiba.mk
index 4753538..1662997 100644
--- a/device-shiba.mk
+++ b/device-shiba.mk
@@ -376,3 +376,7 @@ PRODUCT_VENDOR_PROPERTIES += \
 # Enable DeviceAsWebcam support
 PRODUCT_VENDOR_PROPERTIES += \
     ro.usb.uvc.enabled=true
+
+# DisplayPort should be disabled by default (b/300167292)
+PRODUCT_VENDOR_PROPERTIES += \
+       persist.vendor.usb.displayport.enabled=0