diff --git a/drivers/gpu/nova-core/vbios.rs b/drivers/gpu/nova-core/vbios.rs
index ebda28e596c5..e726594eb130 100644
--- a/drivers/gpu/nova-core/vbios.rs
+++ b/drivers/gpu/nova-core/vbios.rs
@@ -491,7 +491,7 @@ fn new(dev: &device::Device, data: &[u8]) -> Result<Self> {
 
         // Check for valid ROM signatures.
         match signature {
-            0xAA55 | 0xBB77 | 0x4E56 => {}
+            0xAA55 | 0x4E56 => {}
             _ => {
                 dev_err!(dev, "ROM signature unknown {:#x}\n", signature);
                 return Err(EINVAL);