diff --git a/os/iopreds.c b/os/iopreds.c
index e4a05bb79..b862b484b 100644
--- a/os/iopreds.c
+++ b/os/iopreds.c
@@ -190,6 +190,7 @@ static bool is_file_errors(Term t) {
 
 void Yap_DefaultStreamOps(StreamDesc *st) {
   st->stream_wputc = put_wchar;
+  st->stream_wgetc = get_wchar;
   if (st->status & (Promptable_Stream_f)) {
     st->stream_wgetc = get_wchar;
     Yap_ConsoleOps(st, true);
@@ -1354,6 +1355,7 @@ int PlGetc(int sno) {
         st->encoding = enc_id( s_encoding, st->encoding);
       else
         st->encoding = encoding;
+    Yap_DefaultStreamOps( st);
       if (script)
         open_header(sno, open_mode);
 
diff --git a/os/streams.c b/os/streams.c
index 4340341bd..7ad2480f0 100644
--- a/os/streams.c
+++ b/os/streams.c
@@ -790,7 +790,8 @@ static bool do_set_stream(int sno,
           Atom atEnc = AtomOfTerm(t2);
           GLOBAL_Stream[sno].encoding =
             enc_id(atEnc->StrOfAE, (GLOBAL_Stream[sno].status & HAS_BOM_f ? GLOBAL_Stream[sno].encoding :ENC_OCTET ) );
-        }
+       Yap_DefaultStreamOps( GLOBAL_Stream+sno);
+     }
         break;
       case SET_STREAM_EOF_ACTION: {
         Term t2 = args[SET_STREAM_EOF_ACTION].tvalue;