diff --git a/CHANGES b/CHANGES
index 978dea5..7f06f20 100644
--- a/CHANGES
+++ b/CHANGES
@@ -49,6 +49,11 @@ Corrections:
 	derived from option commonname or rom target server name. This is not
 	useful with IP addresses, which Socat now checks and avoids.
 
+	Socat options -L and -W create lock files using mkstemp(), so they had
+	permissions 600. There does not seem to be a good reason for this
+	restrictive mode. Furthermore Silla Rizzoli experienced that Minicom
+	ignores lock files with mode 600, so it is set to 644 now.
+
 Features:
 	VSOCK, VSOCK-L support options pf, socktype, prototype (currently
 	useless)
diff --git a/xiolockfile.c b/xiolockfile.c
index 13a42b6..b2471e8 100644
--- a/xiolockfile.c
+++ b/xiolockfile.c
@@ -51,14 +51,14 @@ int xiogetlock(const char *lockfile) {
    }
   
    pid = Getpid();
-   bytes = sprintf(pidbuf, F_pid, pid);
+   bytes = sprintf(pidbuf, F_pid"\n", pid);
    if (writefull(fd, pidbuf, bytes) < 0) {
       Error4("write(%d, %p, "F_Zu"): %s", fd, pidbuf, bytes, strerror(errno));
       return -1;
    }
+   Fchmod(fd, 0644);
    Close(fd);
 
-   /* Chmod(lockfile, 0600); */
    if (Link(s, lockfile) < 0) {
       int _errno = errno;
       Error3("link(\"%s\", \"%s\"): %s", s, lockfile, strerror(errno));