diff --git a/eliofile/eliofile.go b/eliofile/eliofile.go
index f0f38be..8f3fe71 100644
--- a/eliofile/eliofile.go
+++ b/eliofile/eliofile.go
@@ -1,22 +1,21 @@
 package eliofile
 
 import (
-	"fmt"
 	"log"
 	"os"
 	"strings"
 )
 
+type ElioHandleFunc func(filename string)
+
 type ElioDateiFoo struct {
-	process func(file string)
+	process ElioHandleFunc
 	dir     string
 }
 
-func NewElioDateiFoo(dir string) *ElioDateiFoo {
+func NewElioDateiFoo(dir string, process ElioHandleFunc) *ElioDateiFoo {
 	df := ElioDateiFoo{dir: dir,
-		process: func(file string) {
-			fmt.Println(file)
-		},
+		process: process,
 	}
 	return &df
 }