diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 25bd33916..8123582b8 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -1784,7 +1784,7 @@
 // Enable an emergency-command parser to intercept certain commands as they
 // enter the serial receive buffer, so they cannot be blocked.
 // Currently handles M108, M112, M410
-// Does not work on boards using AT90USB (USBCON) processors!
+// Does not work on boards using AT90USB (USBCON), ESP32, STM32F1/4/7, or Teensy 3.5/3.6 processors!
 //#define EMERGENCY_PARSER
 
 // Bad Serial-connections can miss a received command by sending an 'ok'
diff --git a/buildroot/share/tests/LPC1768-tests b/buildroot/share/tests/LPC1768-tests
index 566cbd27a..9daf91931 100755
--- a/buildroot/share/tests/LPC1768-tests
+++ b/buildroot/share/tests/LPC1768-tests
@@ -43,7 +43,7 @@ opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER SDSUPPORT ADAPTIVE_FAN_
            BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET BABYSTEP_ZPROBE_GFX_OVERLAY \
            PRINTCOUNTER NOZZLE_PARK_FEATURE NOZZLE_CLEAN_FEATURE SLOW_PWM_HEATERS PIDTEMPBED EEPROM_SETTINGS INCH_MODE_SUPPORT TEMPERATURE_UNITS_SUPPORT \
            Z_SAFE_HOMING ADVANCED_PAUSE_FEATURE PARK_HEAD_ON_PAUSE \
-           LCD_INFO_MENU ARC_SUPPORT BEZIER_CURVE_SUPPORT EXTENDED_CAPABILITIES_REPORT AUTO_REPORT_TEMPERATURES SDCARD_SORT_ALPHA
+           LCD_INFO_MENU ARC_SUPPORT BEZIER_CURVE_SUPPORT EXTENDED_CAPABILITIES_REPORT AUTO_REPORT_TEMPERATURES SDCARD_SORT_ALPHA EMERGENCY_PARSER
 opt_set GRID_MAX_POINTS_X 16
 opt_set NOZZLE_TO_PROBE_OFFSET "{ 0, 0, 0 }"
 exec_test $1 $2 "Re-ARM with NOZZLE_AS_PROBE and many features."
diff --git a/buildroot/share/tests/LPC1769-tests b/buildroot/share/tests/LPC1769-tests
index 1dda5ec41..53a7b2818 100755
--- a/buildroot/share/tests/LPC1769-tests
+++ b/buildroot/share/tests/LPC1769-tests
@@ -22,7 +22,7 @@ opt_enable VIKI2 SDSUPPORT ADAPTIVE_FAN_SLOWING NO_FAN_SLOWING_IN_PID_TUNING \
            BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET BABYSTEP_ZPROBE_GFX_OVERLAY \
            PRINTCOUNTER NOZZLE_PARK_FEATURE NOZZLE_CLEAN_FEATURE SLOW_PWM_HEATERS PIDTEMPBED EEPROM_SETTINGS INCH_MODE_SUPPORT TEMPERATURE_UNITS_SUPPORT \
            Z_SAFE_HOMING ADVANCED_PAUSE_FEATURE PARK_HEAD_ON_PAUSE \
-           LCD_INFO_MENU ARC_SUPPORT BEZIER_CURVE_SUPPORT EXTENDED_CAPABILITIES_REPORT AUTO_REPORT_TEMPERATURES SDCARD_SORT_ALPHA
+           LCD_INFO_MENU ARC_SUPPORT BEZIER_CURVE_SUPPORT EXTENDED_CAPABILITIES_REPORT AUTO_REPORT_TEMPERATURES SDCARD_SORT_ALPHA EMERGENCY_PARSER
 opt_set GRID_MAX_POINTS_X 16
 exec_test $1 $2 "Smoothieboard with many features"