diff --git a/internal/port.h b/internal/port.h
index a695f76..b294f3a 100644
--- a/internal/port.h
+++ b/internal/port.h
@@ -53,13 +53,15 @@ namespace CLD2 {
       !defined(__ARM_ARCH_6Z__) && \
       !defined(__ARM_ARCH_6ZK__) && \
       !defined(__ARM_ARCH_6T2__) && \
-      !defined(__ARM_ARCH_7__) && \
-      !defined(__ARM_ARCH_7A__) && \
-      !defined(__ARM_ARCH_7M__) && \
-      !defined(__ARM_ARCH_7R__)
-
-// ARMv7 and newer support native unaligned accesses, but only of 16-bit
-// and 32-bit values (not 64-bit); older versions either raise a fatal signal,
+      !defined(__ARM_ARCH_7__) && \
+      !defined(__ARM_ARCH_7A__) && \
+      !defined(__ARM_ARCH_7M__) && \
+      !defined(__ARM_ARCH_7R__) && \
+      !defined(__ARM_ARCH_8__) && \
+      !defined(__ARM_ARCH_8A__)
+
+// ARMv7 and newer support native unaligned accesses, but only of 16-bit
+// and 32-bit values (not 64-bit); older versions either raise a fatal signal,
 // do an unaligned read and rotate the words around a bit, or do the reads very
 // slowly (trip through kernel mode). There's no simple #define that says just
 // “ARMv7 or higher”, so we have to filter away all ARMv5 and ARMv6