diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c
index 4001eee6c08de214f596e932c7fe454dc0f4c2f8..92c00b24d0df961f62b47b39dd0bffc40de2f47e 100644
--- a/drivers/tty/serial/zs.c
+++ b/drivers/tty/serial/zs.c
@@ -57,6 +57,7 @@
 #include <linux/ioport.h>
 #include <linux/irqflags.h>
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/major.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>