diff --git a/drivers/gpu/nova-core/vbios.rs b/drivers/gpu/nova-core/vbios.rs
index b4bca1919d8f..50fbea69fc00 100644
--- a/drivers/gpu/nova-core/vbios.rs
+++ b/drivers/gpu/nova-core/vbios.rs
@@ -892,7 +892,7 @@ fn try_from(base: BiosImageBase) -> Result<Self> {
 /// The [`PmuLookupTableEntry`] structure is a single entry in the [`PmuLookupTable`].
 ///
 /// See the [`PmuLookupTable`] description for more information.
-#[expect(dead_code)]
+#[repr(C, packed)]
 struct PmuLookupTableEntry {
     application_id: u8,
     target_id: u8,
@@ -901,7 +901,7 @@ struct PmuLookupTableEntry {
 
 impl PmuLookupTableEntry {
     fn new(data: &[u8]) -> Result<Self> {
-        if data.len() < 6 {
+        if data.len() < core::mem::size_of::<Self>() {
             return Err(EINVAL);
         }