diff --git a/src/org/armedbear/lisp/Stream.java b/src/org/armedbear/lisp/Stream.java
index 60f262df..1b1d43d0 100644
--- a/src/org/armedbear/lisp/Stream.java
+++ b/src/org/armedbear/lisp/Stream.java
@@ -396,7 +396,7 @@ static public List<Symbol> availableEncodings() {
     SortedMap<String, Charset> available = Charset.availableCharsets();
     Set<String> encodings = available.keySet();
     for (String charset : encodings) {
-      result.add(new Symbol(charset, PACKAGE_KEYWORD));
+      result.add (PACKAGE_KEYWORD.intern (charset));
     }
     return result;
   }