diff --git a/conf/app.src b/conf/app.src
index aefdce3..65994ce 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/roundcube/roundcubemail/releases/download/1.6.0/roundcubemail-1.6.0.tar.gz
-SOURCE_SUM=1224eaf628888e503c49d0e8a69aa4997e566c3605738d0303d9c7a09722f363
+SOURCE_URL=https://github.com/roundcube/roundcubemail/releases/download/1.6.0/roundcubemail-1.6.0.tar.gz.asc
+SOURCE_SUM=d6f1c9ec14eab5ce02ac39722a3207701f09775bbc8dc1570810c0e666585ff4
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index 59effea..b75b9c7 100644
--- a/manifest.json
+++ b/manifest.json
@@ -31,7 +31,7 @@
         "mysql"
     ],
     "arguments": {
-        "install" : [
+        "install": [
             {
                 "name": "domain",
                 "type": "domain"
@@ -49,7 +49,12 @@
                     "en": "Choose the application language",
                     "fr": "Choisissez la langue de l'application"
                 },
-                "choices": ["de_DE", "en_GB", "fr_FR", "it_IT"],
+                "choices": [
+                    "de_DE",
+                    "en_GB",
+                    "fr_FR",
+                    "it_IT"
+                ],
                 "default": "en_GB"
             },
             {