diff --git a/DSTAT-temp/src/config/conf_clock.h b/DSTAT-temp/src/config/conf_clock.h
index 824a374ff2a314d0d49140a6c1d86b3f49a3e2f4..0f2eb959772f41744f53874643fd834ba4bec592 100644
--- a/DSTAT-temp/src/config/conf_clock.h
+++ b/DSTAT-temp/src/config/conf_clock.h
@@ -93,6 +93,6 @@
 #define CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC  OSC_ID_USBSOF
 
 /* Use to enable and select RTC clock source */
-#define CONFIG_RTC_SOURCE           SYSCLK_RTCSRC_TOSC
+#define CONFIG_RTC_SOURCE           SYSCLK_RTCSRC_RCOSC
 
 #endif /* CONF_CLOCK_H_INCLUDED */