Index: libchess/pgn.c
===================================================================
--- libchess/pgn.c
+++ libchess/pgn.c	2011-05-08 11:08:23.023767053 +0200
@@ -2140,7 +2140,7 @@
 		if (tmpnam(tmp) == NULL)
 		    goto fail;
 
-		if ((fd = open(tmp, O_RDWR|O_EXCL|O_CREAT)) == -1)
+		if ((fd = open(tmp, O_RDWR|O_EXCL|O_CREAT, S_IRUSR|S_IWUSR)) == -1)
 		    goto fail;
 
 		if ((tfp = fdopen(fd, "a+")) == NULL)