diff --git a/src/dj.c b/src/dj.c
index fa3d46a..9aed880 100644
--- a/src/dj.c
+++ b/src/dj.c
@@ -65,13 +65,24 @@ static int write_flags = O_WRONLY | O_CREAT;
 #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 io->bufuse is
- * 0, errno will probably be set. Returns io. */
+ * 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){
 
 	io->bytes += (io->bufuse = read(io->fd, io->buf, io->bs));
 
+	assert(io->bufuse <= io->bs);
+
+	if(io->bufuse != 0){
+		if(io->bufuse < io->bs)
+			++io->prec;
+		else /* if(io->bufuse == io->bs) */
+			++io->rec;
+	}
+
 	return io;
 }
 
@@ -267,8 +278,8 @@ int main(int argc, char *argv[]){
 			Io_read(&io[0]); /* second chance */
 		if(io[0].bufuse == 0) /* that's all she wrote */
 			break;
-		else if(io[0].bufuse < io[0].bs){
-			++io[0].prec;
+
+		if(io[0].bufuse < io[0].bs){
 			fprintf(stderr, "%s: Partial read:\n\t", program_name);
 			printio(fmt, io);
 			if(!noerror)
@@ -279,8 +290,7 @@ int main(int argc, char *argv[]){
 					io[0].bs - io[0].bufuse);
 				io->bufuse = io->bs;
 			}
-		}else
-			++io[0].rec;
+		}
 
 		/* write */
 		do{