diff --git a/src/api/api.go b/src/api/api.go
index 078a0d7..07ae0e4 100644
--- a/src/api/api.go
+++ b/src/api/api.go
@@ -6,15 +6,16 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"errors"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+
 	"github.com/gin-gonic/gin"
 	uuid "github.com/gofrs/uuid"
 	"github.com/h2non/filetype"
 	log "github.com/sirupsen/logrus"
 	qrcode "github.com/skip2/go-qrcode"
-	"os"
-	"os/exec"
-	"strings"
-	"time"
 )
 
 const groupPrefix = "group."
diff --git a/src/docs/docs.go b/src/docs/docs.go
index cb80f03..0c33fe8 100644
--- a/src/docs/docs.go
+++ b/src/docs/docs.go
@@ -169,8 +169,18 @@ var doc = `{
         },
         "/v1/qrcodelink": {
             "get": {
-                "description": "test",
+                "parameters": [
+                    {
+                        "in": "query",
+                        "name": "device_name",
+                        "type": "string",
+                        "required": true,
+                        "description": "The name of the device is being linked. This name will be shown in Signal as device."
+                    }
+                ],
+                "description": "Returns a QR-Code image. In case of an error a JSON object will be returned. Due to security reason of Signal, the provided QR-Code will change with each request.",
                 "produces": [
+                    "image/png".
                     "application/json"
                 ],
                 "tags": [
@@ -179,9 +189,14 @@ var doc = `{
                 "summary": "Link device and generate QR code.",
                 "responses": {
                     "200": {
-                        "description": "Image",
+                        "description": "Ok",
+                        "content":
+                            "image"
+                    },
+                    "400": {
+                        "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/api.Error"
                         }
                     }
                 }