diff --git a/TODO b/TODO
index dfd81de..49e8f3c 100644
--- a/TODO
+++ b/TODO
@@ -2,7 +2,6 @@ maint: clean up source code
 maint: comment source code
 maint: document more
 feat: improve flags
-  -p for port
 feat: replace uuid dep with custom id generator
 feat: multiple files
 feat: share link
diff --git a/cmd/lash/main.go b/cmd/lash/main.go
index 1f994c6..b2ccab9 100644
--- a/cmd/lash/main.go
+++ b/cmd/lash/main.go
@@ -11,6 +11,7 @@ import (
 )
 
 var versionFlag = flag.Bool("version", false, "Print out version and exit.")
+var port = flag.Int("p", 1337, "Set the port for LASH exchanges.")
 
 func main() {
 	flag.Parse()
@@ -24,8 +25,8 @@ func main() {
 
 	errx.Log("Your token is \033[1;92m%s\033[0m", lash.Token)
 
-	errx.Log("starting server at http://0.0.0.0:1337")
-	if err := http.ListenAndServe(":1337", srv); err != nil {
+	errx.Log("starting server at http://0.0.0.0:%d", *port)
+	if err := http.ListenAndServe(fmt.Sprintf(":%d", *port), srv); err != nil {
 		errx.FatalPerror(err)
 	}
 }
diff --git a/internal/app/file.go b/internal/app/file.go
index 3b42355..126ba59 100644
--- a/internal/app/file.go
+++ b/internal/app/file.go
@@ -2,14 +2,14 @@ package app
 
 import (
 	"errors"
-	"os"
+	"flag"
 	"strings"
 )
 
 func GetFilePath() (string, error) {
 	fp := ""
 
-	for _, v := range os.Args[1:] {
+	for _, v := range flag.Args() {
 		if !strings.HasPrefix(v, "-") {
 			fp = v
 			return fp, nil