diff --git a/Marlin/src/feature/caselight.cpp b/Marlin/src/feature/caselight.cpp
index fb0f6e3bee47..5a4e2b2579dd 100644
--- a/Marlin/src/feature/caselight.cpp
+++ b/Marlin/src/feature/caselight.cpp
@@ -44,10 +44,6 @@ bool CaseLight::on = CASE_LIGHT_DEFAULT_ON;
   LEDColor CaseLight::color = { init_case_light[0], init_case_light[1], init_case_light[2], TERN_(HAS_WHITE_LED, init_case_light[3]) };
 #endif
 
-#ifndef INVERT_CASE_LIGHT
-  #define INVERT_CASE_LIGHT false
-#endif
-
 void CaseLight::update(const bool sflag) {
   #if CASELIGHT_USES_BRIGHTNESS
     /**
@@ -64,7 +60,7 @@ void CaseLight::update(const bool sflag) {
     if (sflag && on)
       brightness = brightness_sav;  // Restore last brightness for M355 S1
 
-    const uint8_t i = on ? brightness : 0, n10ct = INVERT_CASE_LIGHT ? 255 - i : i;
+    const uint8_t i = on ? brightness : 0, n10ct = ENABLED(INVERT_CASE_LIGHT) ? 255 - i : i;
     UNUSED(n10ct);
   #endif
 
@@ -86,7 +82,7 @@ void CaseLight::update(const bool sflag) {
       else
     #endif
       {
-        const bool s = on ? !INVERT_CASE_LIGHT : INVERT_CASE_LIGHT;
+        const bool s = on ? TERN(INVERT_CASE_LIGHT, LOW, HIGH) : TERN(INVERT_CASE_LIGHT, HIGH, LOW);
         WRITE(CASE_LIGHT_PIN, s ? HIGH : LOW);
       }
 
diff --git a/Marlin/src/feature/dac/stepper_dac.cpp b/Marlin/src/feature/dac/stepper_dac.cpp
index bb7954cfe05f..1cb0813daa6c 100644
--- a/Marlin/src/feature/dac/stepper_dac.cpp
+++ b/Marlin/src/feature/dac/stepper_dac.cpp
@@ -51,7 +51,7 @@ int StepperDAC::init() {
   mcp4728.setVref_all(DAC_STEPPER_VREF);
   mcp4728.setGain_all(DAC_STEPPER_GAIN);
 
-  if (mcp4728.getDrvPct(0) < 1 || mcp4728.getDrvPct(1) < 1 || mcp4728.getDrvPct(2) < 1 || mcp4728.getDrvPct(3) < 1 ) {
+  if (mcp4728.getDrvPct(0) < 1 || mcp4728.getDrvPct(1) < 1 || mcp4728.getDrvPct(2) < 1 || mcp4728.getDrvPct(3) < 1) {
     mcp4728.setDrvPct(dac_channel_pct);
     mcp4728.eepromWrite();
   }
diff --git a/Marlin/src/gcode/gcode.cpp b/Marlin/src/gcode/gcode.cpp
index 30151b3bd0cb..fa4682c0823f 100644
--- a/Marlin/src/gcode/gcode.cpp
+++ b/Marlin/src/gcode/gcode.cpp
@@ -566,7 +566,7 @@ void GcodeSuite::process_parsed_command(const bool no_ok/*=false*/) {
       #endif
 
       #if ENABLED(AUTO_REPORT_POSITION)
-        case 154: M154(); break;                                  // M155: Set position auto-report interval
+        case 154: M154(); break;                                  // M154: Set position auto-report interval
       #endif
 
       #if BOTH(AUTO_REPORT_TEMPERATURES, HAS_TEMP_SENSOR)
diff --git a/Marlin/src/libs/L64XX/L64XX_Marlin.cpp b/Marlin/src/libs/L64XX/L64XX_Marlin.cpp
index 45c947e7904e..a6aed2ad24fb 100644
--- a/Marlin/src/libs/L64XX/L64XX_Marlin.cpp
+++ b/Marlin/src/libs/L64XX/L64XX_Marlin.cpp
@@ -445,12 +445,7 @@ uint8_t L64XX_Marlin::get_user_input(uint8_t &driver_count, L64XX_axis_t axis_in
       position_min = X_center - displacement;
       position_max = X_center + displacement;
       echo_min_max('X', position_min, position_max);
-      if (false
-        #if HAS_ENDSTOPS
-          || position_min < (X_MIN_POS)
-          || position_max > (X_MAX_POS)
-        #endif
-      ) {
+      if (TERN0(HAS_ENDSTOPS, position_min < (X_MIN_POS) || position_max > (X_MAX_POS))) {
         err_out_of_bounds();
         return true;
       }
@@ -460,12 +455,7 @@ uint8_t L64XX_Marlin::get_user_input(uint8_t &driver_count, L64XX_axis_t axis_in
       position_min = Y_center - displacement;
       position_max = Y_center + displacement;
       echo_min_max('Y', position_min, position_max);
-      if (false
-        #if HAS_ENDSTOPS
-          || position_min < (Y_MIN_POS)
-          || position_max > (Y_MAX_POS)
-        #endif
-      ) {
+      if (TERN0(HAS_ENDSTOPS, position_min < (Y_MIN_POS) || position_max > (Y_MAX_POS))) {
         err_out_of_bounds();
         return true;
       }
@@ -475,12 +465,7 @@ uint8_t L64XX_Marlin::get_user_input(uint8_t &driver_count, L64XX_axis_t axis_in
       position_min = Z_center - displacement;
       position_max = Z_center + displacement;
       echo_min_max('Z', position_min, position_max);
-      if (false
-        #if HAS_ENDSTOPS
-          || position_min < (Z_MIN_POS)
-          || position_max > (Z_MAX_POS)
-        #endif
-      ) {
+      if (TERN0(HAS_ENDSTOPS, position_min < (Z_MIN_POS) || position_max > (Z_MAX_POS))) {
         err_out_of_bounds();
         return true;
       }
diff --git a/Marlin/src/module/planner.h b/Marlin/src/module/planner.h
index 2ec90e1fa239..66e98f4a5704 100644
--- a/Marlin/src/module/planner.h
+++ b/Marlin/src/module/planner.h
@@ -491,7 +491,7 @@ class Planner {
     #if HAS_CLASSIC_JERK
       static void set_max_jerk(const AxisEnum axis, float inMaxJerkMMS);
     #else
-      static inline void set_max_jerk(const AxisEnum, const_float_t ) {}
+      static inline void set_max_jerk(const AxisEnum, const_float_t) {}
     #endif
 
     #if HAS_EXTRUDERS
@@ -592,9 +592,9 @@ class Planner {
 
     #else
 
-      FORCE_INLINE static float fade_scaling_factor_for_z(const_float_t ) { return 1; }
+      FORCE_INLINE static float fade_scaling_factor_for_z(const_float_t) { return 1; }
 
-      FORCE_INLINE static bool leveling_active_at_z(const_float_t ) { return true; }
+      FORCE_INLINE static bool leveling_active_at_z(const_float_t) { return true; }
 
     #endif