diff --git a/ArduCopter/ekf_check.cpp b/ArduCopter/ekf_check.cpp
index fe0ed97954..43b007ccf0 100644
--- a/ArduCopter/ekf_check.cpp
+++ b/ArduCopter/ekf_check.cpp
@@ -209,7 +209,7 @@ void Copter::check_ekf_reset()
     if ((EKF2.getPrimaryCoreIndex() != ekf_primary_core) && (EKF2.getPrimaryCoreIndex() != -1)) {
         ekf_primary_core = EKF2.getPrimaryCoreIndex();
         Log_Write_Error(ERROR_SUBSYSTEM_EKF_PRIMARY, ekf_primary_core);
-        gcs().send_text(MAV_SEVERITY_WARNING, "EKF primary changed:%d\n", (unsigned)ekf_primary_core);
+        gcs().send_text(MAV_SEVERITY_WARNING, "EKF primary changed:%d", (unsigned)ekf_primary_core);
     }
 #endif
 }