diff --git a/bert/hardware-configuration.nix b/bert/hardware-configuration.nix
index bd11bff..1d01430 100644
--- a/bert/hardware-configuration.nix
+++ b/bert/hardware-configuration.nix
@@ -18,7 +18,10 @@
       fsType = "ext4";
     };
 
-  boot.initrd.luks.devices."luks-da40f6d2-49d7-4a55-8a2e-94fa5f28dbbc".device = "/dev/disk/by-uuid/da40f6d2-49d7-4a55-8a2e-94fa5f28dbbc";
+  boot.initrd.luks.devices."luks-da40f6d2-49d7-4a55-8a2e-94fa5f28dbbc" = {
+    device = "/dev/disk/by-uuid/da40f6d2-49d7-4a55-8a2e-94fa5f28dbbc";
+    allowDiscards = true;
+  };
 
   fileSystems."/boot" =
     { device = "/dev/disk/by-uuid/B684-07FB";
diff --git a/oscar/hardware-configuration.nix b/oscar/hardware-configuration.nix
index a950bd3..4ab4ac4 100644
--- a/oscar/hardware-configuration.nix
+++ b/oscar/hardware-configuration.nix
@@ -32,7 +32,10 @@
       fsType = "ext4";
     };
 
-  boot.initrd.luks.devices."luks-8ecd33f4-36cf-44f2-b215-5e67887418b9".device = "/dev/disk/by-uuid/8ecd33f4-36cf-44f2-b215-5e67887418b9";
+  boot.initrd.luks.devices."luks-8ecd33f4-36cf-44f2-b215-5e67887418b9" = {
+    device = "/dev/disk/by-uuid/8ecd33f4-36cf-44f2-b215-5e67887418b9";
+    allowDiscards = true;
+  };
 
   fileSystems."/boot" =
     { device = "/dev/disk/by-uuid/24AC-733A";