diff --git a/inc/myco.js b/inc/myco.js
index 8cd1f7c..d0bbbf9 100644
--- a/inc/myco.js
+++ b/inc/myco.js
@@ -135,7 +135,7 @@ on_home_grp_cat_btn_click=function(e) {
   grp=groups[grp_id];
   ul=$('#grp_cat_modal ul');
   html="";
-  for(cid in grp.categories) {
+  for(cid in grp.getSortedCategories()) {
     html+="<li><span class='cat-color' style='background-color: "+grp.categories[cid]['color']+"'></span> "+grp.categories[cid]['name']+"</li>";
   }
   ul.html(html);
@@ -392,11 +392,13 @@ on_show_add_contribution_modal=function(e) {
   $('#add_contribution_modal #add_contribution_contributor_email')[0].value=$('#view-group #contributor')[0].value;
   gid=$('#add_contribution_modal').data('group-uuid');
   group=groups[gid];
+  current_cat=$('#add_contribution_modal #add_contribution_category')[0].value;
   cats="<option value=''>Non définie</option>";
-  for (u in group.categories) {
+  for (u in group.getSortedCategories()) {
 	cats+="<option value='"+u+"'>"+group.categories[u]['name']+"</option>";
   }
   $('#add_contribution_modal #add_contribution_category').html(cats);
+  $('#add_contribution_modal #add_contribution_category')[0].value=current_cat;
   $('#add_contribution_modal #add_contribution_title').focus();
 }
 
diff --git a/inc/myco_objects.js b/inc/myco_objects.js
index 598d38d..319bcf4 100644
--- a/inc/myco_objects.js
+++ b/inc/myco_objects.js
@@ -338,6 +338,22 @@ function Group(uuid,name,data) {
       data.lastChange
     );
   }
+  
+  this.getSortedCategories=function() {
+	uuids=[];
+	for (uuid in this.categories) {
+	  uuids.push(uuid);
+	}
+	tmp_cats=this.categories;
+	uuids.sort(function(a,b) {
+		return tmp_cats[a]['name'].localeCompare(tmp_cats[b]['name']);
+	});
+	var ret={};
+	for (idx in uuids) {
+      ret[uuids[idx]]=this.categories[uuids[idx]];
+	}
+	return ret;
+  }
 
   /*
    * Balance