diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index 523dfd17dd92..e6a7049bef64 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
+#include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/string_helpers.h>
 #include <linux/uaccess.h>