diff --git a/etc/modprobe.d/blacklist-dma.conf b/etc/modprobe.d/blacklist-dma.conf
index 3e2c7de..3a1485b 100644
--- a/etc/modprobe.d/blacklist-dma.conf
+++ b/etc/modprobe.d/blacklist-dma.conf
@@ -1,3 +1,3 @@
 # Blacklist thunderbolt and firewire to prevent some DMA attacks.
-blacklist firewire-core
-blacklist thunderbolt
+install firewire-core /bin/true
+install thunderbolt /bin/true