diff --git a/firmware/inc/hw_config.h b/firmware/inc/hw_config.h
index 1cac16d..d849608 100644
--- a/firmware/inc/hw_config.h
+++ b/firmware/inc/hw_config.h
@@ -121,7 +121,7 @@
 /**
  * XOSC
  */
-#define USE_XOSC
+//#define USE_XOSC
 #define XOSC_FREQUENCY		16369000
 #define XOSC_GCLK1_DIVIDE	4
 
diff --git a/firmware/src/main.c b/firmware/src/main.c
index 07344ef..8f0bae7 100644
--- a/firmware/src/main.c
+++ b/firmware/src/main.c
@@ -201,6 +201,9 @@ void output_telemetry_string(enum telemetry_t type)
   memset(telemetry_string, '$', dollars);
   len = dollars;
 
+  /* XOSC error disabled */
+  _xosc_error = -1;
+
   /* sprintf - full string */
   len += sprintf(telemetry_string + len,
 		"%s,%02u:%02u:%02u,%02.5f,%03.5f,%ld,%u,%.2f,%.1f,%ld",
@@ -406,6 +409,7 @@ int main(void)
     telemetry_start(TELEMETRY_PIPS, 0xFFFF);
 
     /* Measure XOSC against gps timepulse */
-    measure_xosc(XOSC_MEASURE_TIMEPULSE, xosc_measure_callback);
+    /* ==== Disabled === */
+    //measure_xosc(XOSC_MEASURE_TIMEPULSE, xosc_measure_callback);
   }
 }