diff --git a/Firmware/temperature.cpp b/Firmware/temperature.cpp
index cd453795d..cc052ce04 100755
--- a/Firmware/temperature.cpp
+++ b/Firmware/temperature.cpp
@@ -2676,7 +2676,7 @@ static bool autotune(int16_t cal_temp)
         set_fan_speed(speed);
         wait(10000);
 
-        sprintf_P(tm_message, PSTR("TM: R[%u] estimat."), (unsigned)i);
+        sprintf_P(tm_message, PSTR("TM: R[%u] estimate."), (unsigned)i);
         lcd_setstatus_serial(tm_message);
         samples = record();
         if(temp_error_state.v || !samples)