diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index b80950ffb0..cb10f9d251 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -101,7 +101,7 @@ unsigned char Temperature::soft_pwm_bed;
   millis_t Temperature::watch_heater_next_ms[HOTENDS] = { 0 };
 #endif
 
-#if ENABLED(THERMAL_PROTECTION_HOTENDS) && WATCH_BED_TEMP_PERIOD > 0
+#if ENABLED(THERMAL_PROTECTION_BED) && WATCH_BED_TEMP_PERIOD > 0
   int Temperature::watch_target_bed_temp = 0;
   millis_t Temperature::watch_bed_next_ms = 0;
 #endif
diff --git a/Marlin/temperature.h b/Marlin/temperature.h
index 9cb9909885..60aa80d6a7 100644
--- a/Marlin/temperature.h
+++ b/Marlin/temperature.h
@@ -105,7 +105,7 @@ class Temperature {
       static millis_t watch_heater_next_ms[HOTENDS];
     #endif
 
-    #if ENABLED(THERMAL_PROTECTION_HOTENDS) && WATCH_BED_TEMP_PERIOD > 0
+    #if ENABLED(THERMAL_PROTECTION_BED) && WATCH_BED_TEMP_PERIOD > 0
       static int watch_target_bed_temp;
       static millis_t watch_bed_next_ms;
     #endif