diff --git a/arch/src/lib.rs b/arch/src/lib.rs
index 486b68488..c56497381 100644
--- a/arch/src/lib.rs
+++ b/arch/src/lib.rs
@@ -162,6 +162,6 @@ impl DeviceInfoForFDT for MMIODeviceInfo {
         self.irq
     }
     fn length(&self) -> u64 {
-        4096 as u64
+        4096
     }
 }