diff -r b86283824ede -r 4ce98983666a src/pyams_gis/resources/js/pyams_gis.js
--- a/src/pyams_gis/resources/js/pyams_gis.js	Tue Jul 10 11:17:42 2018 +0200
+++ b/src/pyams_gis/resources/js/pyams_gis.js	Wed Jul 11 11:39:49 2018 +0200
@@ -338,6 +338,7 @@
 										config.zoom || 13);
 					}
 				}
+				map.trigger('marker.cleared.position', [map]);
 			},
 
 			moveMarkerTo: function(map, position, srid) {
@@ -563,6 +564,8 @@
 				// Clear fieldset
 				var fieldset = $(this).parents('fieldset:first');
 				$('input', fieldset).val(null);
+				var map = $('.map', fieldset);
+				map.trigger('marker.cleared.area', [map]);
 			}
 		}
 	};