diff --git a/Marlin/src/lcd/extui/dgus/DGUSDisplay.h b/Marlin/src/lcd/extui/dgus/DGUSDisplay.h
index 6329d8fb23..e54b916ec6 100644
--- a/Marlin/src/lcd/extui/dgus/DGUSDisplay.h
+++ b/Marlin/src/lcd/extui/dgus/DGUSDisplay.h
@@ -68,18 +68,22 @@ public:
   static void writeVariable(uint16_t adr, int8_t value);
   static void writeVariable(uint16_t adr, long value);
 
+  // Western PROGMEM string constant
   static void writeStringVar_P(uint16_t adr, PGM_P const pstr, uint8_t vallen=32) {
     writeVariable_P(adr, (const void *)pstr, vallen, true);
   }
+  // Western F-string constant
+  static void writeVariable(uint16_t adr, FSTR_P const fstr, uint8_t vallen=32) {
+    writeStringVar_P(adr, FTOP(fstr), vallen);
+  }
+  // Western string constant
   static void writeStringVar(uint16_t adr, const char * const cstr, uint8_t vallen=32) {
     writeVariable(adr, (const void *)cstr, vallen, true);
   }
+  // Chinese string constant
   static void writeStringVar(uint16_t adr, const uint16_t * const zhstr, uint8_t vallen=16) {
     writeVariable(adr, (const void *)zhstr, vallen, true);
   }
-  static void writeVariable(uint16_t adr, FSTR_P const fstr, uint8_t vallen=32) {
-    writeStringVar_P(adr, FTOP(fstr), vallen);
-  }
 
   // Utility functions for bridging ui_api and dgus
   template<typename T, float(*Getter)(const T), T selector, typename WireType=uint16_t>
diff --git a/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp b/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp
index e40aab0bff..38b3d93853 100644
--- a/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp
+++ b/Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp
@@ -326,9 +326,9 @@ void DGUSScreenHandler::sendHeaterStatusToDisplay(DGUS_VP_Variable &var) {
   void DGUSScreenHandler::sdCardError() {
     DGUSScreenHandler::sdCardRemoved();
     #if DGUS_LCD_UI_MKS
-      screen.sendInfoScreenMKS(F("NOTICE"), nullptr, F("SD card error"), nullptr, mks_language_index);
+      sendInfoScreenMKS(F("NOTICE"), nullptr, F("SD card error"), nullptr, mks_language_index);
     #else
-      sendInfoScreen(F("NOTICE"), nullptr, F("SD card error"), nullptr, true, true, true, true);
+      sendInfoScreen(F("NOTICE"), nullptr, F("SD card error"), nullptr);
     #endif
     setupConfirmAction(nullptr);
     gotoScreen(DGUS_SCREEN_POPUP);
diff --git a/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.cpp b/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.cpp
index 662430ab79..2a9ba87d68 100644
--- a/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.cpp
+++ b/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.cpp
@@ -1525,7 +1525,7 @@ void DGUSScreenHandlerMKS::updateDisplayLanguage() {
     } break; // MKS_English
 
     case MKS_SimpleChinese: {
-      uint16_t home_buf_ch[] = { 0xF7D6, 0xB3D2 };
+      const uint16_t home_buf_ch[] = { 0xF7D6, 0xB3D2 };
       dgus.writeStringVar(VP_HOME_Dis, home_buf_ch, 4);
 
       const uint16_t Setting_Dis[] = { 0xE8C9, 0xC3D6, 0x2000, 0x2000, 0x2000 };
diff --git a/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.h b/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.h
index 58acb5fe60..01faed6896 100644
--- a/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.h
+++ b/Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.h
@@ -32,9 +32,14 @@ class DGUSScreenHandlerMKS : public DGUSScreenHandler {
 public:
   DGUSScreenHandlerMKS() = default;
 
+  // Western / Chinese PROGMEM strings
+  static void sendInfoScreen_P(PGM_P const line1, PGM_P const line2, PGM_P const line3, PGM_P const line4);
+
+  // Western / Chinese strings
   static void sendInfoScreen(const char *line1, const char *line2, const char *line3, const char *line4);
   static void sendInfoScreen(const uint16_t *line1, const uint16_t *line2, const uint16_t *line3, const uint16_t *line4);
-  static void sendInfoScreen_P(PGM_P const line1, PGM_P const line2, PGM_P const line3, PGM_P const line4);
+
+  // Use the language parameter to choose Western / Chinese string method
   static void sendInfoScreenMKS(const void *line1, const void *line2, const void *line3, const void *line4, const MKS_Language language);
 
   static void screenBackChange(DGUS_VP_Variable &var, void *val_ptr);