diff --git a/include/arch/xtensa/cache.h b/include/arch/xtensa/cache.h
index b8510d88ac2..12dc2c60065 100644
--- a/include/arch/xtensa/cache.h
+++ b/include/arch/xtensa/cache.h
@@ -6,6 +6,7 @@
 #define ZEPHYR_INCLUDE_ARCH_XTENSA_CACHE_H_
 
 #include <xtensa/config/core-isa.h>
+#include <toolchain.h>
 #include <sys/util.h>
 
 #ifdef __cplusplus