diff --git a/lib/libspl/include/sys/isa_defs.h b/lib/libspl/include/sys/isa_defs.h
index 446dbfc37..ae1a35229 100644
--- a/lib/libspl/include/sys/isa_defs.h
+++ b/lib/libspl/include/sys/isa_defs.h
@@ -103,7 +103,7 @@ extern "C" {
 #define	_SUNOS_VTOC_16
 
 /* arm arch specific defines */
-#elif defined(__arm) || defined(__arm__)
+#elif defined(__arm) || defined(__arm__) || defined(__aarch64__)
 
 #if !defined(__arm)
 #define	__arm
@@ -113,7 +113,7 @@ extern "C" {
 #define	__arm__
 #endif
 
-#if defined(__ARMEL__)
+#if defined(__ARMEL__) || defined(__AARCH64EL__)
 #define	_LITTLE_ENDIAN
 #else
 #define	_BIG_ENDIAN