diff --git a/Marlin/src/feature/host_actions.cpp b/Marlin/src/feature/host_actions.cpp
index be7b055b55..c03a6bc597 100644
--- a/Marlin/src/feature/host_actions.cpp
+++ b/Marlin/src/feature/host_actions.cpp
@@ -39,10 +39,7 @@
 
 HostUI hostui;
 
-flag_t HostUI::flag;
-
 void HostUI::action(FSTR_P const fstr, const bool eol) {
-  if (!flag.bits) return;
   PORT_REDIRECT(SerialMask::All);
   SERIAL_ECHOPGM("//action:");
   SERIAL_ECHOF(fstr);
@@ -96,21 +93,18 @@ void HostUI::action(FSTR_P const fstr, const bool eol) {
   #endif
 
   void HostUI::notify(const char * const cstr) {
-    if (!flag.bits) return;
     PORT_REDIRECT(SerialMask::All);
     action(F("notification "), false);
     SERIAL_ECHOLN(cstr);
   }
 
   void HostUI::notify_P(PGM_P const pstr) {
-    if (!flag.bits) return;
     PORT_REDIRECT(SerialMask::All);
     action(F("notification "), false);
     SERIAL_ECHOLNPGM_P(pstr);
   }
 
   void HostUI::prompt(FSTR_P const ptype, const bool eol/*=true*/) {
-    if (!flag.bits) return;
     PORT_REDIRECT(SerialMask::All);
     action(F("prompt_"), false);
     SERIAL_ECHOF(ptype);
@@ -118,7 +112,6 @@ void HostUI::action(FSTR_P const fstr, const bool eol) {
   }
 
   void HostUI::prompt_plus(FSTR_P const ptype, FSTR_P const fstr, const char extra_char/*='\0'*/) {
-    if (!flag.bits) return;
     prompt(ptype, false);
     PORT_REDIRECT(SerialMask::All);
     SERIAL_CHAR(' ');
@@ -127,7 +120,6 @@ void HostUI::action(FSTR_P const fstr, const bool eol) {
     SERIAL_EOL();
   }
   void HostUI::prompt_begin(const PromptReason reason, FSTR_P const fstr, const char extra_char/*='\0'*/) {
-    if (!flag.bits) return;
     prompt_end();
     host_prompt_reason = reason;
     prompt_plus(F("begin"), fstr, extra_char);
diff --git a/Marlin/src/feature/host_actions.h b/Marlin/src/feature/host_actions.h
index 78a7821eba..41d66b82ec 100644
--- a/Marlin/src/feature/host_actions.h
+++ b/Marlin/src/feature/host_actions.h
@@ -24,11 +24,6 @@
 #include "../inc/MarlinConfigPre.h"
 #include "../HAL/shared/Marduino.h"
 
-typedef union {
-  uint8_t bits;
-  struct { bool info:1, errors:1, debug:1; };
-} flag_t;
-
 #if ENABLED(HOST_PROMPT_SUPPORT)
 
   enum PromptReason : uint8_t {
@@ -45,9 +40,6 @@ typedef union {
 class HostUI {
   public:
 
-  static flag_t flag;
-  HostUI() { flag.bits = 0xFF; }
-
   static void action(FSTR_P const fstr, const bool eol=true);
 
   #ifdef ACTION_ON_KILL
diff --git a/Marlin/src/gcode/control/M111.cpp b/Marlin/src/gcode/control/M111.cpp
index 846bf70556..d6aeb77410 100644
--- a/Marlin/src/gcode/control/M111.cpp
+++ b/Marlin/src/gcode/control/M111.cpp
@@ -22,20 +22,12 @@
 
 #include "../gcode.h"
 
-#if ENABLED(HOST_ACTION_COMMANDS)
-  #include "../../feature/host_actions.h"
-#endif
-
 /**
  * M111: Set the debug level
  */
 void GcodeSuite::M111() {
   if (parser.seenval('S')) marlin_debug_flags = parser.value_byte();
 
-  #if EITHER(HOST_ACTION_COMMANDS, HOST_PROMPT_SUPPORT)
-    if (parser.seenval('H')) hostui.flag.bits = parser.value_byte();
-  #endif
-
   static PGMSTR(str_debug_1, STR_DEBUG_ECHO);
   static PGMSTR(str_debug_2, STR_DEBUG_INFO);
   static PGMSTR(str_debug_4, STR_DEBUG_ERRORS);