diff --git a/src/app/spreed-webrtc-server/main.go b/src/app/spreed-webrtc-server/main.go
index 5c6e8e52..60d8fe7a 100644
--- a/src/app/spreed-webrtc-server/main.go
+++ b/src/app/spreed-webrtc-server/main.go
@@ -25,7 +25,6 @@ import (
 	"bytes"
 	"crypto/rand"
 	"encoding/hex"
-	"encoding/json"
 	"flag"
 	"fmt"
 	"html/template"
@@ -209,17 +208,8 @@ func runner(runtime phoenix.Runtime) error {
 	}
 
 	// Load templates.
-	templateFuncMap := template.FuncMap{
-		"json": func(obj interface{}) (template.JS, error) {
-			data, err := json.Marshal(obj)
-			if err != nil {
-				return "", err
-			}
-			return template.JS(data), nil
-		},
-	}
 	templates = template.New("")
-	templates.Delims("<%", "%>").Funcs(templateFuncMap)
+	templates.Delims("<%", "%>").Funcs(templateFuncMap())
 
 	// Load html templates folder
 	err = filepath.Walk(path.Join(rootFolder, "html"), func(path string, info os.FileInfo, err error) error {
diff --git a/src/app/spreed-webrtc-server/template.go b/src/app/spreed-webrtc-server/template.go
new file mode 100644
index 00000000..de058ef3
--- /dev/null
+++ b/src/app/spreed-webrtc-server/template.go
@@ -0,0 +1,39 @@
+/*
+ * Spreed WebRTC.
+ * Copyright (C) 2013-2016 struktur AG
+ *
+ * This file is part of Spreed WebRTC.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package main
+
+import (
+	"encoding/json"
+	"html/template"
+)
+
+func templateFuncMap() template.FuncMap {
+	return template.FuncMap{
+		"json": func(obj interface{}) (template.JS, error) {
+			data, err := json.Marshal(obj)
+			if err != nil {
+				return "", err
+			}
+			return template.JS(data), nil
+		},
+	}
+}
diff --git a/src/app/spreed-webrtc-server/template_test.go b/src/app/spreed-webrtc-server/template_test.go
new file mode 100644
index 00000000..3b34c95e
--- /dev/null
+++ b/src/app/spreed-webrtc-server/template_test.go
@@ -0,0 +1,50 @@
+/*
+ * Spreed WebRTC.
+ * Copyright (C) 2013-2016 struktur AG
+ *
+ * This file is part of Spreed WebRTC.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package main
+
+import (
+	"bytes"
+	"html/template"
+	"testing"
+)
+
+const (
+	templateString = `<script type="application/json">{{json .}}</script>`
+	expectedString = `<script type="application/json">{"name":"Peter"}</script>`
+)
+
+type testPerson struct {
+	Name string `json:"name"`
+}
+
+func TestHTMLTemplateWithJSON(t *testing.T) {
+	tmpl := template.New("").Funcs(templateFuncMap())
+	if _, err := tmpl.Parse(templateString); err != nil {
+		t.Fatalf("Could not parse template '%s': %s", templateString, err.Error())
+	}
+	buf := bytes.NewBuffer(nil)
+	tmpl.Execute(buf, testPerson{Name: "Peter"})
+	out := buf.String()
+	if out != expectedString {
+		t.Fatalf("Strings do not match: got '%s', want '%s'", out, expectedString)
+	}
+}