diff --git a/platformio.ini b/platformio.ini
index 8fffc69d3..9ca59d3e8 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -347,7 +347,7 @@ board = ${common.board}
 board_build.flash_mode = ${common.board_build.flash_mode}
 board_build.f_cpu = ${common.board_build.f_cpu}
 build_unflags = ${common.build_unflags}
-build_flags = ${common.build_flags} -DMY_LANGUAGE=es-AR
+build_flags = ${common.build_flags} -DMY_LANGUAGE=es-ES
 monitor_speed = ${common.monitor_speed}
 upload_port = ${common.upload_port}
 upload_resetmethod = ${common.upload_resetmethod}
diff --git a/sonoff/language/es-AR.h b/sonoff/language/es-ES.h
similarity index 99%
rename from sonoff/language/es-AR.h
rename to sonoff/language/es-ES.h
index 9aca4f417..426d829bd 100644
--- a/sonoff/language/es-AR.h
+++ b/sonoff/language/es-ES.h
@@ -1,5 +1,5 @@
 /*
-  es-AR.h - localization for Spanish - Argentina for Sonoff-Tasmota
+  es-ES.h - localization for Spanish - Spain for Sonoff-Tasmota
 
   Copyright (C) 2019  Adrian Scillato
 
@@ -17,8 +17,8 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef _LANGUAGE_ES_AR_H_
-#define _LANGUAGE_ES_AR_H_
+#ifndef _LANGUAGE_ES_ES_H_
+#define _LANGUAGE_ES_ES_H_
 
 /*************************** ATTENTION *******************************\
  *
@@ -33,7 +33,7 @@
 
 #define LANGUAGE_MODULE_NAME         // Enable to display "Module Generic" (ie Spanish), Disable to display "Generic Module" (ie English)
 
-#define LANGUAGE_LCID 11274
+#define LANGUAGE_LCID 1034
 // HTML (ISO 639-1) Language Code
 #define D_HTML_LANGUAGE "es"
 
@@ -653,4 +653,4 @@
 #define D_UNIT_KWARH      "kVArH"
 #define D_UNIT_ANGLE      "Grados"
 
-#endif  // _LANGUAGE_ES_AR_H_
+#endif  // _LANGUAGE_ES_ES_H_
diff --git a/sonoff/my_user_config.h b/sonoff/my_user_config.h
index 29eb632a6..5ba994a4b 100644
--- a/sonoff/my_user_config.h
+++ b/sonoff/my_user_config.h
@@ -204,7 +204,7 @@
 //#define MY_LANGUAGE            de-DE           // German in Germany
 //#define MY_LANGUAGE            el-GR           // Greek in Greece
 //#define MY_LANGUAGE            en-GB           // English in Great Britain. Enabled by Default
-//#define MY_LANGUAGE            es-AR           // Spanish in Argentina
+//#define MY_LANGUAGE            es-ES           // Spanish in Spain
 //#define MY_LANGUAGE            fr-FR           // French in France
 //#define MY_LANGUAGE            he-HE           // Hebrew in Israel
 //#define MY_LANGUAGE            hu-HU           // Hungarian in Hungary