diff --git a/drivers/linux/chipsec_km.c b/drivers/linux/chipsec_km.c
index 8e1c1238..ecdb2a12 100644
--- a/drivers/linux/chipsec_km.c
+++ b/drivers/linux/chipsec_km.c
@@ -547,7 +547,7 @@ int __weak phys_mem_access_prot_allowed(struct file *file,
         return 1;
 }
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,1,12) && defined(ARCH_HAS_VALID_PHYS_ADDR_RANGE)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,1,12) && defined(ARCH_HAS_VALID_PHYS_ADDR_RANGE) && !defined(__HAVE_ARCH_PAX_OPEN_USERLAND)
 int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
 {
 	return 1;