diff --git a/testing/mm/cachetest/cachetest_main.c b/testing/mm/cachetest/cachetest_main.c
index ff7fe645d..b2616ca13 100644
--- a/testing/mm/cachetest/cachetest_main.c
+++ b/testing/mm/cachetest/cachetest_main.c
@@ -25,6 +25,8 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
+#include <nuttx/cache.h>
+
 #include <stdio.h>
 #include <syslog.h>