diff --git a/radio/src/opentx.cpp b/radio/src/opentx.cpp
index 6b878c183..34aab0143 100644
--- a/radio/src/opentx.cpp
+++ b/radio/src/opentx.cpp
@@ -2914,7 +2914,7 @@ void opentxInit(OPENTX_INIT_ARGS)
   btInit();
 #endif
 
-#if defined(RTCLOCK)
+#if defined(RTCLOCK) && !defined(COPROCESSOR)
   rtcInit();
 #endif
 
diff --git a/radio/src/targets/sky9x/rtc_driver.cpp b/radio/src/targets/sky9x/rtc_driver.cpp
index 92aabb3f8..e39e6e0fa 100644
--- a/radio/src/targets/sky9x/rtc_driver.cpp
+++ b/radio/src/targets/sky9x/rtc_driver.cpp
@@ -276,5 +276,7 @@ void rtcInit()
 {
 #if defined(REVX)
   readRTC();
+#else
+  coprocReadData();
 #endif
 }