diff --git a/Marlin/src/feature/tmc_util.cpp b/Marlin/src/feature/tmc_util.cpp
index 0867686363ca..2e5a5c55850b 100644
--- a/Marlin/src/feature/tmc_util.cpp
+++ b/Marlin/src/feature/tmc_util.cpp
@@ -601,8 +601,8 @@
         case TMC_STEALTHCHOP: serialprint_truefalse(st.en_pwm_mode()); break;
         case TMC_GLOBAL_SCALER:
           {
-            uint16_t value = st.GLOBAL_SCALER();
-            SERIAL_ECHO(value ? value : 256);
+            const uint16_t value = st.GLOBAL_SCALER();
+            SERIAL_ECHO(value ?: 256);
             SERIAL_ECHOPGM("/256");
           }
           break;
diff --git a/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp b/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp
index 3d1594aca2c0..96f2eeae960a 100644
--- a/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp
+++ b/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp
@@ -629,14 +629,14 @@ void ST7920_Lite_Status_Screen::draw_position(const xyze_pos_t &pos, const bool
     #endif
   }
   else {
-    write_byte(alt_label ? alt_label : 'X');
+    write_byte(alt_label ?: 'X');
     write_str(dtostrf(pos.x, -4, 0, str), 4);
 
-    write_byte(alt_label ? alt_label : 'Y');
+    write_byte(alt_label ?: 'Y');
     write_str(dtostrf(pos.y, -4, 0, str), 4);
   }
 
-  write_byte(alt_label ? alt_label : 'Z');
+  write_byte(alt_label ?: 'Z');
   write_str(dtostrf(pos.z, -5, 1, str), 5);
 }
 
diff --git a/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/command_processor.h b/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/command_processor.h
index 648ed5330a98..fd3e8f921c74 100644
--- a/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/command_processor.h
+++ b/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/command_processor.h
@@ -125,7 +125,7 @@ class CommandProcessor : public CLCD::CommandFifo {
     }
 
     inline CommandProcessor& set_button_style_callback(const btn_style_func_t *func) {
-      _btn_style_callback = func ? func : default_button_style_func;
+      _btn_style_callback = func ?: default_button_style_func;
       return *this;
     }
 
diff --git a/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/sound_player.cpp b/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/sound_player.cpp
index 47bf79e46743..3d53f2d99baf 100644
--- a/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/sound_player.cpp
+++ b/Marlin/src/lcd/extui/ftdi_eve_touch_ui/ftdi_eve_lib/extended/sound_player.cpp
@@ -41,7 +41,7 @@ namespace FTDI {
     #endif
 
     // Play the note
-    CLCD::mem_write_16(REG::SOUND, (note == REST) ? 0 : (((note ? note : NOTE_C4) << 8) | effect));
+    CLCD::mem_write_16(REG::SOUND, (note == REST) ? 0 : (((note ?: NOTE_C4) << 8) | effect));
     CLCD::mem_write_8(REG::PLAY, 1);
   }
 
diff --git a/Marlin/src/lcd/extui/ftdi_eve_touch_ui/generic/dialog_box_base_class.cpp b/Marlin/src/lcd/extui/ftdi_eve_touch_ui/generic/dialog_box_base_class.cpp
index a006d30942d9..ea177bfdc1d5 100644
--- a/Marlin/src/lcd/extui/ftdi_eve_touch_ui/generic/dialog_box_base_class.cpp
+++ b/Marlin/src/lcd/extui/ftdi_eve_touch_ui/generic/dialog_box_base_class.cpp
@@ -39,7 +39,7 @@ void DialogBoxBaseClass::drawMessage(T message, const int16_t font) {
      .cmd(CLEAR(true,true,true))
      .cmd(COLOR_RGB(bg_text_enabled))
      .tag(0);
-  draw_text_box(cmd, BTN_POS(1,1), BTN_SIZE(2,6), message, OPT_CENTER, font ? font : font_large);
+  draw_text_box(cmd, BTN_POS(1,1), BTN_SIZE(2,6), message, OPT_CENTER, font ?: font_large);
   cmd.colors(normal_btn);
 }