diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index d1f6930..99dbd5a 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -1,3 +1,4 @@
+#include <linux/kernel.h>
 #include <linux/types.h>
 #include <stdlib.h>
 #include <unistd.h>