diff --git a/src/wirecloud/commons/static/js/StyledElements/CodeArea.js b/src/wirecloud/commons/static/js/StyledElements/CodeArea.js
index 1875cc8c4..3956c4804 100644
--- a/src/wirecloud/commons/static/js/StyledElements/CodeArea.js
+++ b/src/wirecloud/commons/static/js/StyledElements/CodeArea.js
@@ -21,7 +21,7 @@
 
 /* globals StyledElements */
 
-(function(se, utils, monaco) {
+(function (se, utils, monaco) {
 
     "use strict";
 
diff --git a/src/wirecloud/commons/static/js/StyledElements/InputInterfaces.js b/src/wirecloud/commons/static/js/StyledElements/InputInterfaces.js
index 023f3b223..54aaaada1 100644
--- a/src/wirecloud/commons/static/js/StyledElements/InputInterfaces.js
+++ b/src/wirecloud/commons/static/js/StyledElements/InputInterfaces.js
@@ -507,19 +507,19 @@
      */
     se.CodeInputInterface = class CodeInputInterface extends se.InputInterface {
 
-            constructor(fieldId, fieldDesc) {
-                super(fieldId, fieldDesc);
+        constructor(fieldId, fieldDesc) {
+            super(fieldId, fieldDesc);
 
-                this.inputElement = new StyledElements.CodeArea(fieldDesc);
-            }
+            this.inputElement = new StyledElements.CodeArea(fieldDesc);
+        }
 
-            static parse(value) {
-                return value;
-            }
+        static parse(value) {
+            return value;
+        }
 
-            static stringify(value) {
-                return value;
-            }
+        static stringify(value) {
+            return value;
+        }
 
     }
 
diff --git a/src/wirecloud/commons/tests/template.py b/src/wirecloud/commons/tests/template.py
index f29f7ef5a..bd50c087c 100644
--- a/src/wirecloud/commons/tests/template.py
+++ b/src/wirecloud/commons/tests/template.py
@@ -170,6 +170,7 @@ def setUpClass(cls):
                     'value': None,
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 },
                 {
                     'name': 'pref2',
@@ -182,6 +183,7 @@ def setUpClass(cls):
                     'value': '5',
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 }
             ],
             'properties': [
@@ -304,6 +306,7 @@ def setUpClass(cls):
                     'value': None,
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 },
                 {
                     'name': 'pref2',
@@ -316,6 +319,7 @@ def setUpClass(cls):
                     'value': '5',
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 }
             ],
             'properties': [
@@ -1290,6 +1294,7 @@ def setUpClass(cls):
                     'value': None,
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 },
                 {
                     'name': 'pref2',
@@ -1302,6 +1307,7 @@ def setUpClass(cls):
                     'value': '5',
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 }
             ],
             'properties': [
@@ -1499,6 +1505,7 @@ def setUpClass(cls):
                     'value': None,
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 },
                 {
                     'name': 'pref2',
@@ -1511,6 +1518,7 @@ def setUpClass(cls):
                     'value': None,
                     'multiuser': False,
                     'required': False,
+                    'language': ''
                 },
             ],
             'properties': [],
diff --git a/src/wirecloud/commons/utils/template/parsers/json.py b/src/wirecloud/commons/utils/template/parsers/json.py
index 444797a2c..727bc8a8f 100644
--- a/src/wirecloud/commons/utils/template/parsers/json.py
+++ b/src/wirecloud/commons/utils/template/parsers/json.py
@@ -203,7 +203,7 @@ def _init(self):
             self._check_array_fields(('preferences', 'properties'))
             for preference in self._info['preferences']:
                 self._check_string_fields(('name', 'type'), place=preference, required=True)
-                self._check_string_fields(('label', 'description', 'default'), place=preference)
+                self._check_string_fields(('label', 'description', 'default', 'language'), place=preference)
                 self._check_boolean_fields(('readonly', 'secure'), place=preference, default=False)
                 self._check_string_fields(('value',), place=preference, null=True, default=None)
                 preference['multiuser'] = False
diff --git a/src/wirecloud/commons/utils/template/parsers/xml.py b/src/wirecloud/commons/utils/template/parsers/xml.py
index ab3e30a29..0b25744b7 100644
--- a/src/wirecloud/commons/utils/template/parsers/xml.py
+++ b/src/wirecloud/commons/utils/template/parsers/xml.py
@@ -486,7 +486,7 @@ def _parse_component_preferences(self):
                 'secure': preference.get('secure', 'false').lower() == 'true',
                 'multiuser': False,
                 'required': preference.get('required', 'false').lower() == 'true',
-                'language': str(preference.get('language', 'plaintext'))
+                'language': str(preference.get('language', ''))
             }
 
             if preference_info['type'] == 'list':
diff --git a/src/wirecloud/defaulttheme/templates/wirecloud/views/base_plain.html b/src/wirecloud/defaulttheme/templates/wirecloud/views/base_plain.html
index c774899d5..779187363 100644
--- a/src/wirecloud/defaulttheme/templates/wirecloud/views/base_plain.html
+++ b/src/wirecloud/defaulttheme/templates/wirecloud/views/base_plain.html
@@ -25,8 +25,8 @@
     {% endblock %}
 
     {% block basejs %}
-    {% compress js %}
     <script type="text/javascript" src="{% url "wirecloud.javascript_translation_catalogue" %}?language={{ LANGUAGE_CODE }}&amp;v={{ WIRECLOUD_VERSION_HASH }}"></script>
+    {% compress js %}
     <script type="text/javascript" src="{% static "js/lib/moment-with-locales.min.js" %}"></script>
     <script type="text/javascript" src="{% static "js/lib/moment-timezone-with-data.min.js" %}"></script>
     {% endcompress %}
diff --git a/src/wirecloud/fiwarelabtheme/templates/wirecloud/views/base_plain.html b/src/wirecloud/fiwarelabtheme/templates/wirecloud/views/base_plain.html
index c849eaaa0..f974e337d 100644
--- a/src/wirecloud/fiwarelabtheme/templates/wirecloud/views/base_plain.html
+++ b/src/wirecloud/fiwarelabtheme/templates/wirecloud/views/base_plain.html
@@ -25,8 +25,8 @@
     {% endblock %}
 
     {% block basejs %}
-    {% compress js %}
     <script type="text/javascript" src="{% url "wirecloud.javascript_translation_catalogue" %}?language={{ LANGUAGE_CODE }}&amp;v={{ WIRECLOUD_VERSION_HASH }}"></script>
+    {% compress js %}
     <script type="text/javascript" src="{% static "js/lib/moment-with-locales.min.js" %}"></script>
     <script type="text/javascript" src="{% static "js/lib/moment-timezone-with-data.min.js" %}"></script>
     {% endcompress %}
diff --git a/src/wirecloud/fiwaretheme/templates/wirecloud/views/base_plain.html b/src/wirecloud/fiwaretheme/templates/wirecloud/views/base_plain.html
index 97c8f621c..780d281ca 100644
--- a/src/wirecloud/fiwaretheme/templates/wirecloud/views/base_plain.html
+++ b/src/wirecloud/fiwaretheme/templates/wirecloud/views/base_plain.html
@@ -22,8 +22,8 @@
     {% endblock %}
 
     {% block basejs %}
-    {% compress js %}
     <script type="text/javascript" src="{% url "wirecloud.javascript_translation_catalogue" %}?language={{ LANGUAGE_CODE }}&amp;v={{ WIRECLOUD_VERSION_HASH }}"></script>
+    {% compress js %}
     <script type="text/javascript" src="{% static "js/lib/moment-with-locales.min.js" %}"></script>
     <script type="text/javascript" src="{% static "js/lib/moment-timezone-with-data.min.js" %}"></script>
     {% endcompress %}
diff --git a/src/wirecloud/platform/localcatalogue/tests.py b/src/wirecloud/platform/localcatalogue/tests.py
index 4e53b1dcd..c3066671a 100644
--- a/src/wirecloud/platform/localcatalogue/tests.py
+++ b/src/wirecloud/platform/localcatalogue/tests.py
@@ -119,6 +119,7 @@ def check_basic_widget_info(self, resource):
                 'secure': False,
                 'name': 'pref',
                 'label': 'Preference label',
+                'language': '',
                 'type': 'list',
                 'options': [{'value': '1', 'label': 'Option name'}],
                 'readonly': False,
@@ -376,6 +377,7 @@ def test_template_translations(self):
                 'secure': False,
                 'name': 'pref',
                 'label': 'Etiqueta de la preferencia',
+                'language': '',
                 'type': 'list',
                 'options': [{'value': '1', 'label': 'Nombre de la opción'}],
                 'readonly': False,
@@ -412,6 +414,7 @@ def test_repeated_translation_indexes(self):
                 'secure': False,
                 'name': 'pref',
                 'label': 'Label',
+                'language': '',
                 'type': 'text',
                 'readonly': False,
                 'description': 'Preference description',