diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 924a951..7d9e3a7 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -14,6 +14,7 @@
 #include "util/debug.h"
 
 #include <linux/rbtree.h>
+#include <linux/slab.h>
 
 struct alloc_stat;
 typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);