diff --git a/extruder/config.h.dist b/extruder/config.h.dist
index cafd78c..c842060 100644
--- a/extruder/config.h.dist
+++ b/extruder/config.h.dist
@@ -52,8 +52,6 @@
 
 #define	REFERENCE	REFERENCE_AVCC
 
-#define ANALOG_MASK	(MASK(TRIM_POT_CHANNEL) | MASK(TEMP_PIN_CHANNEL) | MASK(TEMP_BED_PIN_CHANNEL))
-
 #define	TEMP_THERMISTOR
 
 #define	HEATER_PIN	DIO11
@@ -67,6 +65,8 @@
 #ifdef	DEFINE_TEMP_SENSOR
 DEFINE_TEMP_SENSOR(extruder,	TT_THERMISTOR,		TEMP_PIN_CHANNEL,		THERMISTOR_EXTRUDER)
 DEFINE_TEMP_SENSOR(bed,			TT_THERMISTOR,		TEMP_BED_PIN_CHANNEL,	THERMISTOR_EXTRUDER)
+// dummy temp sensor so analog_mask includes trim pot
+DEFINE_TEMP_SENSOR(noheater,	TT_THERMISTOR,		TRIM_POT_CHANNEL,		0)
 #endif
 
 #ifdef	DEFINE_HEATER