diff --git a/libs/devicemapper/src/loopdevice/sys.rs b/libs/devicemapper/src/loopdevice/sys.rs
index 98b5085..a35eaa9 100644
--- a/libs/devicemapper/src/loopdevice/sys.rs
+++ b/libs/devicemapper/src/loopdevice/sys.rs
@@ -61,6 +61,8 @@
 unsafe impl DataInit for loop_info64 {}
 
 bitflags! {
+    #[repr(transparent)]
+    #[derive(Copy, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
     pub struct Flag: u32 {
         const LO_FLAGS_READ_ONLY = 1 << 0;
         const LO_FLAGS_AUTOCLEAR = 1 << 2;
diff --git a/libs/devicemapper/src/sys.rs b/libs/devicemapper/src/sys.rs
index e709bf0..3cecde3 100644
--- a/libs/devicemapper/src/sys.rs
+++ b/libs/devicemapper/src/sys.rs
@@ -72,6 +72,8 @@
 pub const DM_MAX_TYPE_NAME: usize = 16;
 
 bitflags! {
+    #[repr(transparent)]
+    #[derive(Copy, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
     pub struct Flag: u32 {
         const DM_READONLY_FLAG = 1 << 0;
         const DM_SUSPEND_FLAG = 1 << 1;