diff --git a/Marlin/src/inc/Conditionals_LCD.h b/Marlin/src/inc/Conditionals_LCD.h
index 78164ade7b..633efc1e2f 100644
--- a/Marlin/src/inc/Conditionals_LCD.h
+++ b/Marlin/src/inc/Conditionals_LCD.h
@@ -1206,7 +1206,7 @@
 #if !HAS_MARLINUI_HD44780
   #undef LCD_INFO_SCREEN_STYLE
 #endif
-#if NONE(HAS_MARLINUI_U8GLIB, HAS_TFT_LVGL_UI)
+#if NONE(HAS_MARLINUI_U8GLIB, HAS_TFT_LVGL_UI, DGUS_LCD_UI_E3S1PRO)
   #undef LCD_LANGUAGE
 #endif
 
diff --git a/Marlin/src/lcd/extui/dgus_e3s1pro/DGUSSDCardHandler.h b/Marlin/src/lcd/extui/dgus_e3s1pro/DGUSSDCardHandler.h
index 8844184271..22fb489496 100644
--- a/Marlin/src/lcd/extui/dgus_e3s1pro/DGUSSDCardHandler.h
+++ b/Marlin/src/lcd/extui/dgus_e3s1pro/DGUSSDCardHandler.h
@@ -22,7 +22,7 @@
 #pragma once
 
 #include <inttypes.h>
-#include "../../../sd/cardreader.h"
+#include "../../../sd/SdFatConfig.h"
 
 #define DGUS_E3S1PRO_BASIC_SDCARD_MAX_FILES      20
 #define DGUS_E3S1PRO_BASIC_SDCARD_FILES_PER_PAGE  5
diff --git a/Marlin/src/lcd/extui/dgus_e3s1pro/config/DGUS_Data.h b/Marlin/src/lcd/extui/dgus_e3s1pro/config/DGUS_Data.h
index 237cec7795..05f9a1db43 100644
--- a/Marlin/src/lcd/extui/dgus_e3s1pro/config/DGUS_Data.h
+++ b/Marlin/src/lcd/extui/dgus_e3s1pro/config/DGUS_Data.h
@@ -23,6 +23,13 @@
 
 #include <inttypes.h>
 
+#include "../../../../inc/MarlinConfigPre.h"
+
+#ifndef LCD_LANGUAGE
+  #define LCD_LANGUAGE en
+  #warning "LCD_LANGUAGE not defined, defaulting to English."
+#endif
+
 namespace DGUS_Data {
 
   // RX constants