diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 15b2a17c..f13f46a 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -11,11 +11,13 @@
 #include "thread.h"
 #include "vdso.h"
 #include <stdbool.h>
-#include <symbol/kallsyms.h>
 #include "unwind.h"
 #include "linux/hash.h"
 #include "asm/bug.h"
 
+#include "sane_ctype.h"
+#include <symbol/kallsyms.h>
+
 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock);
 
 static void dsos__init(struct dsos *dsos)