diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index 60b328ea67..1ff1e2b641 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -1028,6 +1028,9 @@ static_assert(NUM_SERVOS <= NUM_SERVO_PLUGS, "NUM_SERVOS (or some servo index) i
   #undef MPC_AUTOTUNE_MENU
   #undef MPC_PTC
 #endif
+#if !WITHIN(PID_MAX, 0, 255)
+  #error "PID_MAX must be an integer from 0 to 255."
+#endif
 
 #if ENABLED(MPC_INCLUDE_FAN)
   #if !HAS_FAN
@@ -1048,6 +1051,9 @@ static_assert(NUM_SERVOS <= NUM_SERVO_PLUGS, "NUM_SERVOS (or some servo index) i
 #if ALL(PIDTEMPBED, BED_LIMIT_SWITCHING)
   #error "To use BED_LIMIT_SWITCHING you must disable PIDTEMPBED."
 #endif
+#if !WITHIN(MAX_BED_POWER, 0, 255)
+  #error "MAX_BED_POWER must be an integer from 0 to 255."
+#endif
 
 // Fan Kickstart power
 #if FAN_KICKSTART_TIME