diff --git a/app/assets/templates/projects/index.html.erb b/app/assets/templates/projects/index.html.erb
index c30f73b57..8309fcfdb 100644
--- a/app/assets/templates/projects/index.html.erb
+++ b/app/assets/templates/projects/index.html.erb
@@ -26,7 +26,7 @@
       <a href="javascript:void(0);" class="text-sm pull-right" name="button" ng-click="resetFiltersAndTriggerSearch()" ng-show="!openlab.searchOverWholeNetwork"><i class="fa fa-refresh"></i> {{ 'reset_all_filters' | translate }}</a></h3>
     </div>
     <div class="col-md-12 m-b">
-      <span ng-if="openlab.projectsActive">
+      <span ng-if="openlab.projectsActive" uib-tooltip="{{ 'tooltip_openlab_projects_switch' | translate }}" tooltip-trigger="mouseenter">
         <label for="searchOverWholeNetwork" class="control-label m-r" translate>{{ 'search_over_the_whole_network' }}</label>
         <input bs-switch
                ng-model="openlab.searchOverWholeNetwork"
diff --git a/config/locales/app.public.en.yml b/config/locales/app.public.en.yml
index 07b6180c2..ed775b6be 100644
--- a/config/locales/app.public.en.yml
+++ b/config/locales/app.public.en.yml
@@ -119,6 +119,7 @@ en:
         # projects gallery
         the_fablab_projects: "The Fab Lab projects"
         search_over_the_whole_network: "Search over the whole network"
+        tooltip_openlab_projects_switch: "The search over the whole network lets you search over the projects of every Fab-manager using this feature !"
         openlab_search_not_available_at_the_moment: "Search over the whole network is not available at the moment. You still can search over the projects of this platform."
         project_search_result_is_empty: "Sorry, we found no results matching your search criteria."
         add_a_project: "Add a project"
diff --git a/config/locales/app.public.fr.yml b/config/locales/app.public.fr.yml
index 449297185..a4df6e482 100644
--- a/config/locales/app.public.fr.yml
+++ b/config/locales/app.public.fr.yml
@@ -119,6 +119,7 @@ fr:
         # galerie des projets
         the_fablab_projects: "Les projets du FabLab"
         search_over_the_whole_network: "Chercher sur tout le réseau"
+        tooltip_openlab_projects_switch: "La recherche sur tout le réseau vous permet de rechercher parmis les projets de tous les Fab-managers utilisant cette fonctionnalité !"
         openlab_search_not_available_at_the_moment: "La recherche sur tout le réseau n'est pas disponible pour le moment. Vous ne pouvez cependant effectuer une recherche parmis les projets de cette plateforme."
         project_search_result_is_empty: "Il n'y a pas de projets correspondant à vos critères de recherche."
         add_a_project: "Ajouter un projet"