diff --git a/Marlin/src/feature/e_parser.h b/Marlin/src/feature/e_parser.h
index 78b5cf28ad..80088273aa 100644
--- a/Marlin/src/feature/e_parser.h
+++ b/Marlin/src/feature/e_parser.h
@@ -79,7 +79,7 @@ public:
 
   static void update(State &state, const uint8_t c);
 
-  static bool isEnabled() { return enabled;}
+  static bool isEnabled() { return enabled; }
 
 private:
   static bool enabled;
diff --git a/Marlin/src/gcode/gcode.cpp b/Marlin/src/gcode/gcode.cpp
index 28f13310d8..df9802f9a1 100644
--- a/Marlin/src/gcode/gcode.cpp
+++ b/Marlin/src/gcode/gcode.cpp
@@ -591,11 +591,11 @@ void GcodeSuite::process_parsed_command(const bool no_ok/*=false*/) {
       case 110: M110(); break;                                    // M110: Set Current Line Number
       case 111: M111(); break;                                    // M111: Set debug level
 
-      case 108: M108(); break;                                  // M108: Cancel Waiting
-      case 112: M112(); break;                                  // M112: Full Shutdown
-      case 410: M410(); break;                                  // M410: Quickstop - Abort all the planned moves.
+      case 108: M108(); break;                                    // M108: Cancel Waiting
+      case 112: M112(); break;                                    // M112: Full Shutdown
+      case 410: M410(); break;                                    // M410: Quickstop - Abort all the planned moves.
       #if ENABLED(HOST_PROMPT_SUPPORT)
-        case 876: M876(); break;                                // M876: Handle Host prompt responses
+        case 876: M876(); break;                                  // M876: Handle Host prompt responses
       #endif
 
       #if ENABLED(HOST_KEEPALIVE_FEATURE)
diff --git a/Marlin/src/gcode/gcode.h b/Marlin/src/gcode/gcode.h
index e2def83b23..84718f0a37 100644
--- a/Marlin/src/gcode/gcode.h
+++ b/Marlin/src/gcode/gcode.h
@@ -140,7 +140,7 @@
  * M105 - Report current temperatures.
  * M106 - Set print fan speed.
  * M107 - Print fan off.
- * M108 - Break out of heating loops (M109, M190, M303). With no controller, breaks out of M0/M1. (Requires EMERGENCY_PARSER)
+ * M108 - Break out of heating loops (M109, M190, M303). With no controller, breaks out of M0/M1.
  * M109 - S<temp> Wait for extruder current temp to reach target temp. ** Wait only when heating! **
  *        R<temp> Wait for extruder current temp to reach target temp. ** Wait for heating or cooling. **
  *        If AUTOTEMP is enabled, S<mintemp> B<maxtemp> F<factor>. Exit autotemp by any M109 without F
@@ -307,7 +307,7 @@
  * M869 - Report position encoder module error.
  *
  * M871 - Print/reset/clear first layer temperature offset values. (Requires PTC_PROBE, PTC_BED, or PTC_HOTEND)
- * M876 - Handle Prompt Response. (Requires HOST_PROMPT_SUPPORT and not EMERGENCY_PARSER)
+ * M876 - Handle Prompt Response. (Requires HOST_PROMPT_SUPPORT)
  * M900 - Get or Set Linear Advance K-factor. (Requires LIN_ADVANCE)
  * M906 - Set or get motor current in milliamps using axis codes XYZE, etc. Report values if no axis codes given. (Requires at least one _DRIVER_TYPE defined as TMC2130/2160/5130/5160/2208/2209/2660)
  * M907 - Set digital trimpot motor current using axis codes. (Requires a board with digital trimpots)
diff --git a/Marlin/src/gcode/host/M876.cpp b/Marlin/src/gcode/host/M876.cpp
index 2e9157620a..9a5c4c52bf 100644
--- a/Marlin/src/gcode/host/M876.cpp
+++ b/Marlin/src/gcode/host/M876.cpp
@@ -36,8 +36,9 @@
  */
 void GcodeSuite::M876() {
 
-  if (TERN1(EMERGENCY_PARSER, emergency_parser.isEnabled()) && parser.seenval('S'))
-    hostui.handle_response((uint8_t)parser.value_int());
+  if (TERN0(EMERGENCY_PARSER, emergency_parser.isEnabled())) return;
+
+  if (parser.seenval('S')) hostui.handle_response((uint8_t)parser.value_int());
 
 }
 
diff --git a/Marlin/src/sd/cardreader.cpp b/Marlin/src/sd/cardreader.cpp
index 68b5846c2f..bac1fd257e 100644
--- a/Marlin/src/sd/cardreader.cpp
+++ b/Marlin/src/sd/cardreader.cpp
@@ -1013,7 +1013,9 @@ void CardReader::closefile(const bool store_location/*=false*/) {
   flag.saving = flag.logging = false;
   sdpos = 0;
 
-  TERN_(EMERGENCY_PARSER, emergency_parser.enable());
+  #if DISABLED(SDCARD_READONLY)
+    TERN_(EMERGENCY_PARSER, emergency_parser.enable());
+  #endif
 
   if (store_location) {
     // TODO: Store printer state, filename, position