diff --git a/firmware/drivers/pcf50606.c b/firmware/drivers/pcf50606.c
index a93b94399e..d28fc00e7d 100644
--- a/firmware/drivers/pcf50606.c
+++ b/firmware/drivers/pcf50606.c
@@ -27,6 +27,16 @@ int pcf50606_write(int address, unsigned char val)
     return i2c_write(PCF50606_ADDR, data, 2);
 }
 
+int pcf50606_write_multiple(int address, const unsigned char* buf, int count)
+{
+    int i;
+
+    for (i = 0; i < count; i++)
+        pcf50606_write(address + i, buf[i]);
+
+    return 0;
+}
+
 int pcf50606_read(int address)
 {
     unsigned char val = -1;
diff --git a/firmware/export/config-cowond2.h b/firmware/export/config-cowond2.h
index d3b23b225d..d71e528134 100644
--- a/firmware/export/config-cowond2.h
+++ b/firmware/export/config-cowond2.h
@@ -59,7 +59,7 @@
 #define HAVE_TOUCHPAD
 
 /* define this if you have a real-time clock */
-//#define CONFIG_RTC RTC_TCC780X
+#define CONFIG_RTC RTC_PCF50606
 
 /* define this if you have RTC RAM available for settings */
 //#define HAVE_RTC_RAM