diff --git a/kernel/printk.c b/kernel/printk.c
index e95e7c6..bee3610 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1251,6 +1251,7 @@
 	return;
 }
 
+#if defined CONFIG_PRINTK
 /*
  * printk rate limiting, lifted from the networking subsystem.
  *
@@ -1320,3 +1321,4 @@
 	return false;
 }
 EXPORT_SYMBOL(printk_timed_ratelimit);
+#endif