1 files changed, 9 insertions, 9 deletions
diff --git a/DuetPkg/FSVariable/FSVariable.c b/DuetPkg/FSVariable/FSVariable.c
index 49e92076e1..c41467c6f8 100644
--- a/DuetPkg/FSVariable/FSVariable.c
+++ b/DuetPkg/FSVariable/FSVariable.c
@@ -553,9 +553,9 @@ Returns:
   Get index from supported language codes according to language string.
 
   This code is used to get corresponding index in supported language codes. It can handle
-  RFC3066 and ISO639 language tags.
+  RFC4646 and ISO639 language tags.
   In ISO639 language tags, take 3-characters as a delimitation to find matched string and calculate the index.
-  In RFC3066 language tags, take semicolon as a delimitation to find matched string and calculate the index.
+  In RFC4646 language tags, take semicolon as a delimitation to find matched string and calculate the index.
 
   For example:
     SupportedLang  = "engfraengfra"
@@ -570,7 +570,7 @@ Returns:
 
   @param  SupportedLang               Platform supported language codes.
   @param  Lang                        Configured language.
-  @param  Iso639Language              A bool value to signify if the handler is operated on ISO639 or RFC3066.
+  @param  Iso639Language              A bool value to signify if the handler is operated on ISO639 or RFC4646.
 
   @retval the index of language in the language codes.
 
@@ -604,7 +604,7 @@ GetIndexFromSupportedLangCodes(
     return 0;
   } else {
     //
-    // Compare RFC3066 language code
+    // Compare RFC4646 language code
     //
     while (*Supported != '\0') {
       //
@@ -630,9 +630,9 @@ GetIndexFromSupportedLangCodes(
   Get language string from supported language codes according to index.
 
   This code is used to get corresponding language string in supported language codes. It can handle
-  RFC3066 and ISO639 language tags.
+  RFC4646 and ISO639 language tags.
   In ISO639 language tags, take 3-characters as a delimitation. Find language string according to the index.
-  In RFC3066 language tags, take semicolon as a delimitation. Find language string according to the index.
+  In RFC4646 language tags, take semicolon as a delimitation. Find language string according to the index.
 
   For example:
     SupportedLang  = "engfraengfra"
@@ -647,7 +647,7 @@ GetIndexFromSupportedLangCodes(
 
   @param  SupportedLang               Platform supported language codes.
   @param  Index                       the index in supported language codes.
-  @param  Iso639Language              A bool value to signify if the handler is operated on ISO639 or RFC3066.
+  @param  Iso639Language              A bool value to signify if the handler is operated on ISO639 or RFC4646.
 
   @retval the language string in the language codes.
 
@@ -769,7 +769,7 @@ AutoUpdateLangVariable(
     Index = GetIndexFromSupportedLangCodes(mGlobal->PlatformLangCodes, BestPlatformLang, FALSE);
 
     //
-    // Get the corresponding ISO639 language tag according to RFC3066 language tag.
+    // Get the corresponding ISO639 language tag according to RFC4646 language tag.
     //
     BestLang = GetLangFromSupportedLangCodes(mGlobal->LangCodes, Index, TRUE);
 
@@ -799,7 +799,7 @@ AutoUpdateLangVariable(
     Index = GetIndexFromSupportedLangCodes(mGlobal->LangCodes, BestLang, TRUE);
 
     //
-    // Get the corresponding RFC3066 language tag according to ISO639 language tag.
+    // Get the corresponding RFC4646 language tag according to ISO639 language tag.
     //
     BestPlatformLang = GetLangFromSupportedLangCodes(mGlobal->PlatformLangCodes, Index, FALSE);