diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 28a41128fc6b..5c3030b5e719 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -121,7 +121,9 @@ static unsigned long one_ul = 1;
 static unsigned long long_max = LONG_MAX;
 static int one_hundred = 100;
 static int two_hundred = 200;
+#ifdef CONFIG_PERF_EVENTS
 static int one_thousand = 1000;
+#endif
 static int three_thousand = 3000;
 #ifdef CONFIG_PRINTK
 static int ten_thousand = 10000;