diff --git a/bsps/include/acpi/acpica/platform/acenv.h b/bsps/include/acpi/acpica/platform/acenv.h
index cc198c01a1..7cc33232b3 100644
--- a/bsps/include/acpi/acpica/platform/acenv.h
+++ b/bsps/include/acpi/acpica/platform/acenv.h
@@ -360,6 +360,9 @@
 
 #elif defined(__ZEPHYR__)
 #include "aczephyr.h"
+
+#elif defined(__rtems__)
+#include <acpi/acpica/platform/acrtems.h>
 #else
 
 /* Unknown environment */