diff --git a/drivers/rtc/rtc-st-lpc.c b/drivers/rtc/rtc-st-lpc.c
index 82b0af159a28..6f33e705928f 100644
--- a/drivers/rtc/rtc-st-lpc.c
+++ b/drivers/rtc/rtc-st-lpc.c
@@ -246,6 +246,7 @@ static int st_rtc_probe(struct platform_device *pdev)
 
 	rtc->clkrate = clk_get_rate(rtc->clk);
 	if (!rtc->clkrate) {
+		clk_disable_unprepare(rtc->clk);
 		dev_err(&pdev->dev, "Unable to fetch clock rate\n");
 		return -EINVAL;
 	}