diff --git a/Resources/config/config.yml b/Resources/config/config.yml
index 4753ea9..5937b76 100644
--- a/Resources/config/config.yml
+++ b/Resources/config/config.yml
@@ -4,6 +4,6 @@ plugin:
 
   tools:
     - name: claroline_activity_tool
-      class: icon-tasks
+      class: tasks
       is_displayable_in_workspace: true
       is_displayable_in_desktop: true
diff --git a/Resources/views/desktopActivityList.html.twig b/Resources/views/desktopActivityList.html.twig
index 3cdc569..96ecacc 100644
--- a/Resources/views/desktopActivityList.html.twig
+++ b/Resources/views/desktopActivityList.html.twig
@@ -4,7 +4,7 @@
     {{
         macros.breadcrumbs([
             {
-                'icon': 'icon-briefcase',
+                'icon': 'fa fa-briefcase',
                 'name': 'desktop'|trans({}, 'platform'),
                 'href': path('claro_desktop_open')
             },
@@ -28,7 +28,7 @@
             <div class="panel-heading">
                 <h4 class="panel-title">
                     <a class="accordion-toggle" data-toggle="collapse" href="#collapse-{{ workspaceInfo.code }}">
-                        <span class="icon-book"></span> {{ workspaceInfo.name }}
+                        <span class="fa fa-book"></span> {{ workspaceInfo.name }}
                         <span class="workspace-code">({{ workspaceInfo.code }})</span>
                     </a>
                 </h4>
diff --git a/Resources/views/workspaceActivityList.html.twig b/Resources/views/workspaceActivityList.html.twig
index 6918fb5..1aab9c3 100644
--- a/Resources/views/workspaceActivityList.html.twig
+++ b/Resources/views/workspaceActivityList.html.twig
@@ -4,7 +4,7 @@
     {{
         macros.breadcrumbs([
             {
-                'icon': 'icon-book',
+                'icon': 'fa fa-book',
                 'name': 'workspaces'|trans({}, 'platform'),
                 'href': path('claro_workspace_list')
             },
diff --git a/composer.json b/composer.json
index e6b4d20..7ac303b 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "claroline/core-bundle": ">=1.0,<3.0"
+        "claroline/core-bundle": ">=3.0,<4.0"
     },
     "autoload": {
         "psr-0": { "Claroline\\ActivityToolBundle": "" }