diff --git a/hw/rtc/Kconfig b/hw/rtc/Kconfig
index 159c233..434b20b 100644
--- a/hw/rtc/Kconfig
+++ b/hw/rtc/Kconfig
@@ -1,3 +1,7 @@
+config M41T80
+    bool
+    depends on I2C
+
 config M48T59
     bool