diff --git a/src/dj.c b/src/dj.c
index 4feae19..d5f209c 100644
--- a/src/dj.c
+++ b/src/dj.c
@@ -56,6 +56,9 @@ static char *fmt_human = "%d+%d > %d+%d; %d > %d\n";
 static char *stdin_name = "<stdin>";
 static char *stdout_name = "<stdout>";
 
+
+static int creat_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH
+	| S_IWOTH; /* Consistent with touch(1p). */
 static int read_flags = O_RDONLY; /* Consistent with Busybox dd(1). */
 static int write_flags = O_WRONLY | O_CREAT;
 
@@ -64,11 +67,6 @@ static int write_flags = O_WRONLY | O_CREAT;
 /* Macro to check if fd is stdin or stdout */
 #define fdisstd(fd) ((fd) == STDIN_FILENO || (fd) == STDOUT_FILENO)
 
-/* Reads io->bs bytes from *io's file descriptor into io->buf, storing the
- * number of read bytes in io->bufuse and updating io->bytes. If the buf isn't
- * saturated but is still read into, io->prec will be incremented. If the buf
- * is saturated, io->rec will be incremented. If io->bufuse is 0, errno will
- * probably be set. Returns io. */
 static struct Io *
 Io_read(struct Io *io){
 
@@ -84,9 +82,6 @@ Io_read(struct Io *io){
 	return io;
 }
 
-/* Writes io->bufuse (>0) units from io->buf to io->fd, permuting any unwritten
- * bytes to the start of io->buf and updating io->bufuse. If io->bufuse doesn't
- * change, errno will probably be set. Returns io. */
 static struct Io *
 Io_write(struct Io *io){
 	int t;
@@ -190,10 +185,7 @@ int main(int argc, char *argv[]){
 				}else{
 					int fd;
 
-					if((fd = open(optarg, io[i].fl, /* touch(1p) flags */
-									S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP
-										| S_IROTH | S_IWOTH))
-								!= -1
+					if((fd = open(optarg, io[i].fl, creat_mode)) != -1
 							&& (fdisstd(io[i].fd) || close(io[i].fd) == 0)){
 						io[i].fd = fd;
 						io[i].fn = optarg;