String method conversion.
diff --git a/Lib/string.py b/Lib/string.py
index 61b253e..bdd9254 100644
--- a/Lib/string.py
+++ b/Lib/string.py
@@ -356,7 +356,7 @@
     fromstr = map(ord, fromstr)
     for i in range(len(fromstr)):
         L[fromstr[i]] = tostr[i]
-    return joinfields(L, "")
+    return join(L, "")
 
 # Substring replacement (global)
 def replace(s, old, new, maxsplit=-1):