diff --git a/src/arch/aarch64/mmu.rs b/src/arch/aarch64/mmu.rs
index d29e1f6..bfb9973 100644
--- a/src/arch/aarch64/mmu.rs
+++ b/src/arch/aarch64/mmu.rs
@@ -47,7 +47,9 @@ pub fn print_features() {
     }
 }
 
-register_bitfields! {u64,
+register_bitfields! {
+    u64,
+
     // AArch64 Reference Manual page 2150
     STAGE1_DESCRIPTOR [
         /// Execute-never