diff --git a/udev/udev-qubes-block.rules b/udev/udev-qubes-block.rules
index e6ea2c2..7ae120e 100644
--- a/udev/udev-qubes-block.rules
+++ b/udev/udev-qubes-block.rules
@@ -14,6 +14,7 @@ ENV{MAJOR}=="202", GOTO="qubes_block_end"
 KERNEL=="dm-*", ENV{DM_NAME}=="snapshot-*", GOTO="qubes_block_end"
 KERNEL=="dm-*", ENV{DM_NAME}=="origin-*", GOTO="qubes_block_end"
 KERNEL=="dm-*", ENV{DM_NAME}=="", GOTO="qubes_block_end"
+ENV{DM_UDEV_DISABLE_DISK_RULES_FLAG}=="1", GOTO="qubes_block_end"
 
 IMPORT{db}="QUBES_EXPOSED"
 ACTION=="add", IMPORT{program}="/usr/libexec/qubes/udev-block-add-change"