diff --git a/README.md b/README.md
index d00f206..52e1472 100644
--- a/README.md
+++ b/README.md
@@ -22,11 +22,10 @@ Available Commands:
   version     Print version
 
 Flags:
-  -f, --filter string   only display images matching specified pattern (case-insensitive)
-  -h, --help            help for roulette
-  -p, --port int        port to listen on (default 8080)
-  -r, --recursive       recurse into subdirectories
-  -v, --verbose         log accessed files to stdout
+  -h, --help          help for roulette
+  -p, --port uint16   port to listen on (default 8080)
+  -r, --recursive     recurse into subdirectories
+  -v, --verbose       log accessed files to stdout
 
 Use "roulette [command] --help" for more information about a command.
-```
\ No newline at end of file
+```
diff --git a/cmd/root.go b/cmd/root.go
index 58181cd..78ea90c 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -10,7 +10,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var Port int
+var Port uint16
 var Recursive bool
 var Verbose bool
 
@@ -31,7 +31,7 @@ func Execute() {
 }
 
 func init() {
-	rootCmd.Flags().IntVarP(&Port, "port", "p", 8080, "port to listen on")
+	rootCmd.Flags().Uint16VarP(&Port, "port", "p", 8080, "port to listen on")
 	rootCmd.Flags().BoolVarP(&Recursive, "recursive", "r", false, "recurse into subdirectories")
 	rootCmd.Flags().BoolVarP(&Verbose, "verbose", "v", false, "log accessed files to stdout")
 	rootCmd.Flags().SetInterspersed(true)
diff --git a/cmd/version.go b/cmd/version.go
index ce24da5..eb13fd5 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -10,7 +10,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var Version = "0.13.2"
+var Version = "0.13.3"
 
 func init() {
 	rootCmd.AddCommand(versionCmd)
diff --git a/cmd/web.go b/cmd/web.go
index 119700d..929eeab 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -320,7 +320,7 @@ func ServePage(args []string) error {
 	http.Handle(PREFIX+"/", http.StripPrefix(PREFIX, serveStaticFileHandler(paths)))
 	http.HandleFunc("/favicon.ico", doNothing)
 
-	err = http.ListenAndServe(":"+strconv.Itoa(Port), nil)
+	err = http.ListenAndServe(":"+strconv.FormatInt(int64(Port), 10), nil)
 	if err != nil {
 		return err
 	}