diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c
index 8469256edc2af906fa8991b7fd910348f3761f7b..ade6a82709bee792c912dcc6f81c26f6f8b56d5b 100644
--- a/drivers/rtc/rtc-test.c
+++ b/drivers/rtc/rtc-test.c
@@ -22,7 +22,7 @@ struct rtc_test_data {
 	bool alarm_en;
 };
 
-struct platform_device *pdev[MAX_RTC_TEST];
+static struct platform_device *pdev[MAX_RTC_TEST];
 
 static int test_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {