diff --git a/sys/amd64/include/pmap.h b/sys/amd64/include/pmap.h
index 309e62606cae..58683d764abf 100644
--- a/sys/amd64/include/pmap.h
+++ b/sys/amd64/include/pmap.h
@@ -138,7 +138,7 @@
 #define PGEX_RSV	0x08	/* reserved PTE field is non-zero */
 #define PGEX_I		0x10	/* during an instruction fetch */
 #define	PGEX_PK		0x20	/* protection key violation */
-#define	PGEX_SGX	0x40	/* SGX-related */
+#define	PGEX_SGX	0x8000	/* SGX-related */
 
 /* 
  * undef the PG_xx macros that define bits in the regular x86 PTEs that