diff --git a/i18nlangtag/source/isolang/isolang.cxx b/i18nlangtag/source/isolang/isolang.cxx
index 1ce95c43c731..88521f1587c5 100644
--- a/i18nlangtag/source/isolang/isolang.cxx
+++ b/i18nlangtag/source/isolang/isolang.cxx
@@ -682,6 +682,7 @@ IsoLanguageCountryEntry const aImplIsoLangEntries[] =
     { LANGUAGE_USER_ENGLISH_ANTIGUA_BARBUDA,"en", "AG", k0    },
     { LANGUAGE_USER_SARAIKI,               "skr", "PK", k0    },
     { LANGUAGE_USER_MORISYEN,              "mfe", "MU", k0    },
+    { LANGUAGE_USER_FRENCH_GUINEA,          "fr", "GN", k0    },
     // Add new languages ^^^ there.
     { LANGUAGE_MULTIPLE,                   "mul", ""  , k0    },    // multiple languages, many languages are used
     { LANGUAGE_UNDETERMINED,               "und", ""  , k0    },    // undetermined language, language cannot be identified
diff --git a/include/i18nlangtag/lang.h b/include/i18nlangtag/lang.h
index 524b9243e00d..d37c8bbe7090 100644
--- a/include/i18nlangtag/lang.h
+++ b/include/i18nlangtag/lang.h
@@ -792,6 +792,7 @@ namespace o3tl
 #define LANGUAGE_USER_ROHINGYA_HANIFI       LanguageType(0x06B1)
 #define LANGUAGE_USER_MORISYEN              LanguageType(0x06B2)
 #define LANGUAGE_USER_SANTALI_OLCHIKI_INDIA LanguageType(0x06B3)
+#define LANGUAGE_USER_FRENCH_GUINEA         LanguageType(0x940C)  /* makeLangID( 0x25, getPrimaryLanguage( LANGUAGE_FRENCH)) */
 
 
 /* XXX Add new user defined LCIDs ^^^ there.
diff --git a/svtools/inc/langtab.hrc b/svtools/inc/langtab.hrc
index eba0db6d1b3a..e2a3e82d016a 100644
--- a/svtools/inc/langtab.hrc
+++ b/svtools/inc/langtab.hrc
@@ -445,7 +445,8 @@ const std::pair<TranslateId, LanguageType> STR_ARR_SVT_LANGUAGE_TABLE[] =
     { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Saraiki") , LANGUAGE_USER_SARAIKI },
     { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Rohingya Hanifi") , LANGUAGE_USER_ROHINGYA_HANIFI },
     { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Morisyen") , LANGUAGE_USER_MORISYEN },
-    { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Santali, Ol Chiki") , LANGUAGE_USER_SANTALI_OLCHIKI_INDIA }
+    { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Santali, Ol Chiki") , LANGUAGE_USER_SANTALI_OLCHIKI_INDIA },
+    { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "French (Republic of Guinea)") , LANGUAGE_USER_FRENCH_GUINEA }
 };