diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index f57f7976cd..7d5482605e 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -80,6 +80,8 @@ enable2ndByteCanID = false
 ; CONFIG_DEFINITION_END
 	idleRpmPid_offset = "Constant base value"
 
+	; TS will try to use legacy temp units in some cases, showing "deg F" on a CLT gauge that's actually deg C
+	useLegacyFTempUnits = false
 
 [Tuning]
    spotDepth       =   2 ; 0 = no indicators, 1 = Z only, 2 = XYZ indicators.