diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 74730e0c1be1a46ce08d8a753403d26b756b9d36..628b03ab88a579c52f9c802440e768c4752ab957 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -20,6 +20,7 @@
 #include <linux/signal.h>
 #include <linux/audit.h>
 #include <linux/pid_namespace.h>
+#include <linux/syscalls.h>
 
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>