diff --git a/repository/Grease-Pharo70-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st b/repository/Grease-Pharo70-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
index e6a8ceb0..d1c6d00b 100644
--- a/repository/Grease-Pharo70-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
+++ b/repository/Grease-Pharo70-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
@@ -2,7 +2,7 @@ private
 supportedEncodingNames
 	"answers the names of the encodings supported by this class"
 
-	^ TextConverter allEncodingNames
+	^ (TextConverter allSubclasses gather: [ :class | class encodingNames ]) asSet asOrderedCollection
 		removeAllFoundIn: GRPharoLatin1Codec supportedEncodingNames;
 		removeAllFoundIn: UTF8TextConverter encodingNames;
 		yourself
\ No newline at end of file
diff --git a/repository/Grease-Squeak5-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st b/repository/Grease-Squeak5-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
index e6a8ceb0..d1c6d00b 100644
--- a/repository/Grease-Squeak5-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
+++ b/repository/Grease-Squeak5-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
@@ -2,7 +2,7 @@ private
 supportedEncodingNames
 	"answers the names of the encodings supported by this class"
 
-	^ TextConverter allEncodingNames
+	^ (TextConverter allSubclasses gather: [ :class | class encodingNames ]) asSet asOrderedCollection
 		removeAllFoundIn: GRPharoLatin1Codec supportedEncodingNames;
 		removeAllFoundIn: UTF8TextConverter encodingNames;
 		yourself
\ No newline at end of file
diff --git a/repository/Grease-Squeak6-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st b/repository/Grease-Squeak6-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
index e6a8ceb0..d1c6d00b 100644
--- a/repository/Grease-Squeak6-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
+++ b/repository/Grease-Squeak6-Core.package/GRPharoGenericCodec.class/class/supportedEncodingNames.st
@@ -2,7 +2,7 @@ private
 supportedEncodingNames
 	"answers the names of the encodings supported by this class"
 
-	^ TextConverter allEncodingNames
+	^ (TextConverter allSubclasses gather: [ :class | class encodingNames ]) asSet asOrderedCollection
 		removeAllFoundIn: GRPharoLatin1Codec supportedEncodingNames;
 		removeAllFoundIn: UTF8TextConverter encodingNames;
 		yourself
\ No newline at end of file