1 files changed, 5 insertions, 3 deletions
diff --git a/streams.c b/streams.c
index beed5b1..5706566 100644
--- a/streams.c
+++ b/streams.c
@@ -323,7 +323,8 @@ peekchar(Term *t)
 {
 	Stream *s = getstream(t);
 	Rune r = Bgetrune(s->bio);
-	Bungetrune(s->bio);
+	if(r != Beof)
+		Bungetrune(s->bio);
 	return r;
 }
 
@@ -412,11 +413,12 @@ Term *streamproperties(Stream *s)
 	/* end_of_stream(E) */
 	if(s->mode == ReadStream){
 		Rune r = Bgetrune(s->bio);
-		Bungetrune(s->bio);
 		if(r == Beof)
 			arg = mkatom(L"at");
-		else
+		else{
+			Bungetrune(s->bio);
 			arg = mkatom(L"not");
+		}
 		data = copyterm(stream, nil);
 		data->next = mkcompound(L"end_of_stream", 1, arg);
 		prop = mkcompound(L"prop", 2, data);