diff --git a/main.go b/main.go
index 6e91631..eb4b953 100644
--- a/main.go
+++ b/main.go
@@ -9,6 +9,7 @@ import (
 	"io"
 	"log"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/metalnem/runtastic/api"
@@ -27,6 +28,15 @@ var (
 
 	// Error is used for logging errors.
 	Error = log.New(os.Stderr, "ERROR: ", log.Ldate|log.Ltime)
+
+	schemaLocation = strings.Join([]string{
+		"http://www.topografix.com/GPX/1/1",
+		"http://www.topografix.com/GPX/1/1/gpx.xsd",
+		"http://www.garmin.com/xmlschemas/GpxExtensions/v3",
+		"http://www.garmin.com/xmlschemas/GpxExtensionsv3.xsd",
+		"http://www.garmin.com/xmlschemas/TrackPointExtension/v1",
+		"http://www.garmin.com/xmlschemas/TrackPointExtensionv1.xsd",
+	}, " ")
 )
 
 type rfc3339Time struct {
@@ -43,11 +53,11 @@ type trackPoint struct {
 
 type gpx struct {
 	XMLName        xml.Name     `xml:"http://www.topografix.com/GPX/1/1 gpx"`
-	SchemaInstance string       `xml:"xmlns:xsi,attr"`
-	SchemaLocation string       `xml:"xsi:schemaLocation,attr"`
-	Extension      string       `xml:"xmlnss:gpxtpx,attr"`
 	Version        float32      `xml:"version,attr"`
 	Creator        string       `xml:"creator,attr"`
+	SchemaInstance string       `xml:"xmlns:xsi,attr"`
+	SchemaLocation string       `xml:"xsi:schemaLocation,attr"`
+	Extension      string       `xml:"xmlns:gpxtpx,attr"`
 	Time           rfc3339Time  `xml:"metadata>time"`
 	TrackPoints    []trackPoint `xml:"trk>trkseg>trkpt"`
 }
@@ -123,7 +133,7 @@ func archive(filename string, activities []api.Activity) (err error) {
 
 		data := gpx{
 			SchemaInstance: "http://www.w3.org/2001/XMLSchema-instance",
-			SchemaLocation: "http://www.topografix.com/GPX/1/1",
+			SchemaLocation: schemaLocation,
 			Extension:      "http://www.garmin.com/xmlschemas/TrackPointExtension/v1",
 			Version:        1.1,
 			Creator:        "Runtastic Archiver, https://github.com/Metalnem/runtastic",