diff --git a/firmware/wideband_config.h b/firmware/wideband_config.h
index 80b1b73..b0730af 100644
--- a/firmware/wideband_config.h
+++ b/firmware/wideband_config.h
@@ -36,6 +36,6 @@
 #define HEATER_PREHEAT_TIME 5000
 #define HEATER_WARMUP_TIMEOUT 15000
 
-#define HEATER_CLOSED_LOOP_THRESHOLD_ESR 1000
+#define HEATER_CLOSED_LOOP_THRESHOLD_ESR 2000
 #define HEATER_TARGET_ESR 300
 #define HEATER_FAULT_ESR 200