diff --git a/sys/arm64/include/pte.h b/sys/arm64/include/pte.h
index 5d4412d2c14..b3bec720e9f 100644
--- a/sys/arm64/include/pte.h
+++ b/sys/arm64/include/pte.h
@@ -125,7 +125,7 @@ typedef	uint64_t	pt_entry_t;		/* page table entry */
 #define	L2_BLOCK	L1_BLOCK
 #define	L2_TABLE	L1_TABLE
 
-#define	L2_BLOCK_MASK	UINT64_C(0xffffffe00000)
+#define	L2_BLOCK_MASK	UINT64_C(0xffffffffffe00000)
 
 /* Level 3 table, 4KiB per entry */
 #define	L3_SHIFT	12