diff --git a/app/db_mgr.py b/app/db_mgr.py
index 4ccd8d1..e131c24 100644
--- a/app/db_mgr.py
+++ b/app/db_mgr.py
@@ -10,7 +10,13 @@ charge_unit = 100
 
 def projects():
     """
-    Build the list of all agents, with their charges for the current period
+    Build the list of all projects, with their charges for the current period
+
+    Returns a table with headers in the first line:
+    Id, Project name, Category_1, ... , Category_n, Total_Charge_for_the_period
+
+    The category cells embed the list of the labels of the project for that category.
+
     :return:
     """
     current_period_id = get_current_period()
@@ -26,21 +32,26 @@ def projects():
     projects_charges = db.session.execute(sql_txt).fetchall()
     # First row is table titles
     all_projects = [["Id", "Projet"]]
-    # Add all categories as last table titles
-    for c in Category.query.all():
+    # Add all categories as next table titles
+    # will then look like [["Id", "Projet", "Domaine", "Pôle"]]
+    categories = Category.query.all()
+    for c in categories:
         all_projects[0].append(c.name)
+    # the add charge title to become [["Id", "Projet", "Domaine", "Pôle", "Charge"]]
     all_projects[0].append("Charge")
     # Build the table row by row
-    for pc in projects_charges:
-        p_id = pc[0]
+    for _pc in projects_charges:
+        p_id = _pc[0]
         p = Project.query.get(int(p_id))
-        p_labels = p.labels
-        # adding 3 first columns: id, name and total charge
+        # adding 2 first columns: id, name
         project_row = [p.id, p.name]
-        # then labels, one for each category
-        for pl in p_labels:
-            project_row.append(pl.label.name)
-        project_row.append(pc[1])
+        # then labels, many for each category
+        for category in categories:
+            # we build the labels.name list of the intersection of that category labels with projects labels
+            labels = [_cl.label.name for _cl in category.labels if _cl.label in [_pl.label for _pl in p.labels]]
+            project_row.append(labels)
+        # then add total charge
+        project_row.append(_pc[1])
         all_projects.append(project_row)
     return all_projects
 
diff --git a/app/main/routes.py b/app/main/routes.py
index 1431089..4e57fdc 100644
--- a/app/main/routes.py
+++ b/app/main/routes.py
@@ -91,7 +91,7 @@ def project(project_id):
     this_project = Project.query.get(int(project_id))
     charges_table = db_mgr.charges_by_project(project_id)
     return render_template('project.html',
-                           project=this_project,
+                           project=this_project.to_struct(),
                            charges=charges_table,
                            subtitle="{}".format(this_project.name))
 
diff --git a/app/main/templates/project.html b/app/main/templates/project.html
index 563ce03..a1edf1b 100644
--- a/app/main/templates/project.html
+++ b/app/main/templates/project.html
@@ -15,10 +15,10 @@
   <div class="card-body">
     <dl class="row">
       <dt class="col-sm-2 text-right">ID :</dt>
-      <dd class="col-sm-10 text-left">{{project.id}}</dd>
-      {% for pl in project.labels %}
-        <dt class="col-sm-2 text-right">{{pl.label.category.name}} :</dt>
-        <dd class="col-sm-10 text-left">{{pl.label.name}}</dd>
+      <dd class="col-sm-10 text-left">{{project['id']}}</dd>
+      {% for category, labels in project['labels'].items() %}
+        <dt class="col-sm-2 text-right">{{category}} :</dt>
+        <dd class="col-sm-10 text-left">{{labels|join(",")}}</dd>
       {% endfor %}
       <dt class="col-sm-2 text-right">Etat :</dt>
       <dd class="col-sm-10 text-left"></dd>
diff --git a/app/main/templates/projects.html b/app/main/templates/projects.html
index 34792b8..2fc7c9e 100644
--- a/app/main/templates/projects.html
+++ b/app/main/templates/projects.html
@@ -18,8 +18,9 @@
     <td><a href="{{url_for('main.project', project_id=project[0])}}">
       {{ project[1] }}</a>
     </td>
+    {#the category cells#}
     {% for c in project[2:-1] %}
-    <td>{{c}}</td>
+    <td>{{c|join(',')}}</td>
     {% endfor %}
     <td>{{ project[-1] /100}}</td>
   </tr>
--
libgit2 0.21.2