diff --git a/include/grub/cache.h b/include/grub/cache.h
index 1c98ce270..ccfa717e6 100644
--- a/include/grub/cache.h
+++ b/include/grub/cache.h
@@ -34,7 +34,9 @@ void EXPORT_FUNC(grub_arch_sync_caches) (void *address, grub_size_t len);
 #endif
 
 #ifndef GRUB_MACHINE_EMU
-#if defined (__i386__) || defined (__x86_64__)
+#if defined (__aarch64__) || defined (__powerpc__) || defined (__sparc__)
+
+#elif defined (__i386__) || defined (__x86_64__)
 static inline void
 grub_arch_sync_dma_caches (volatile void *address __attribute__ ((unused)),
 			   grub_size_t len __attribute__ ((unused)))