diff --git a/include/linux/rtc-v3020.h b/include/linux/rtc-v3020.h
index 8ba646e610d9..e55d82cebf80 100644
--- a/include/linux/rtc-v3020.h
+++ b/include/linux/rtc-v3020.h
@@ -15,7 +15,7 @@
 struct v3020_platform_data {
 	int leftshift; /* (1<<(leftshift)) & readl() */
 
-	int use_gpio:1;
+	unsigned int use_gpio:1;
 	unsigned int gpio_cs;
 	unsigned int gpio_wr;
 	unsigned int gpio_rd;