diff --git a/predihood/static/js/carto.js b/predihood/static/js/carto.js
index aea2a1bb002266643e09f5a687cb7462cf52bfac..39a2a7a2d2e566ba701d7a158792cc98be8a6ac5 100644
--- a/predihood/static/js/carto.js
+++ b/predihood/static/js/carto.js
@@ -14,6 +14,7 @@ let baseLayers = null; // array of basic layers
 let overlayLayers = null; // array of overlaying layers
 let osmLayer = null; // openstreetmap basic layer
 let irisLayer = null; // layer of displayed IRIS
+let previously_selected_algorithm = null;
 
 
 /**
@@ -76,26 +77,27 @@ function resetHighlightAll() {
 
 
 function displayPopup(e) {
-    alert("ici")
     var layer = e.target;
     var code_iris = layer.feature.properties.CODE_IRIS
-    var algorithm = $("#selectAlgorithmTooltip option:selected").val();
-    console.log(algorithm);
+    let selected_algorithm = $("#selectAlgorithmTooltip option:selected").val();
     let predictions = undefined;
-    if (algorithm !== "undefined" && algorithm !== undefined) {
-        predictions = predict(code_iris, algorithm)
+    if (selected_algorithm !== "undefined" && selected_algorithm !== undefined) {
+        predictions = predict(code_iris, selected_algorithm)
         console.log(predictions)
     }
+
     let divInformation = $("<div>");
     divInformation
         .append("CODE IRIS : " + layer.feature.properties.CODE_IRIS).append($("<br>"))
         .append("IRIS : " + layer.feature.properties.NOM_IRIS).append($("<br>"))
         .append("COMMUNE : " + layer.feature.properties.NOM_COM).append($("<br>"))
-        .append($("<a>")
-            .prop("href", "details-iris.html?code_iris='"+layer.feature.properties.CODE_IRIS + "'"))
-            .prop("target", "_blank")
-            .val("Plus de détails")
+    let moreInfosLink = $("<a>");
+    moreInfosLink
+        .prop("href", "details-iris.html?code_iris="+layer.feature.properties.CODE_IRIS)
+        .prop("target", "_blank")
+        .text("Plus de détails")
         .append($("<br>"));
+    divInformation.append(moreInfosLink);
 
     let selectAlgorithm = $("<select>")
     selectAlgorithm
@@ -105,50 +107,21 @@ function displayPopup(e) {
     for(let algorithm of classifiers) {
        selectAlgorithm.append($("<option>").prop("value", algorithm).text(algorithm));
     }
-    if (algorithm !== "undefined" && algorithm !== undefined) {
-        selectAlgorithm.val(algorithm); // select the algorithm inside the list
-    }
+    previously_selected_algorithm = selected_algorithm;
 
     let divPredictions = $("<div>").prop("id", "divPredictions")
     if(predictions !== undefined) {
         for(let key in predictions) { divPredictions.append(key+': ' + predictions[key]["most_frequent"] + " (" + predictions[key]["count_frequent"] + "/7)").append($('<br>')); }
     }
 
-    // let divPredictions = updatePopup(e)
-
     let messageTooltip = divInformation[0].outerHTML + selectAlgorithm[0].outerHTML + divPredictions[0].outerHTML;
     console.log(messageTooltip)
     layer.bindPopup(messageTooltip)
     layer.bringToFront();
     layer.openPopup();
 
+    $("#selectAlgorithmTooltip").val(previously_selected_algorithm); // must be after binding the popup to be effective
     $("#selectAlgorithmTooltip").on("click", function() { displayPopup(e)}) // update popup (env variables) when click on an algorithm
-
-    // $("#selectAlgorithmTooltip").change(function() {
-        // var layer = e.target;
-        // var code_iris = layer.feature.properties.CODE_IRIS
-        // var algorithm = $("#selectAlgorithmTooltip option:selected").text();
-        // console.log(algorithm)
-        // let predictions = predict(code_iris, algorithm)
-        //
-        // // let messageTooltip = '<div>CODE IRIS : ' + code_iris + '<br/>'
-        // // messageTooltip += 'IRIS : ' + layer.feature.properties.NOM_IRIS + '<br/>'
-        // // messageTooltip += 'COMMUNE : ' + layer.feature.properties.NOM_COM + '<br/>'
-        // // messageTooltip += '<a href="details-iris.html?code_iris='+layer.feature.properties.CODE_IRIS + '" target="_blank">Plus de détails</a></div></br>';
-        // // var select_algorithm = $("<select>").prop("id", "selectAlgorithmTooltip");
-        // // select_algorithm.append($("<option>").val("undefined").text("---"));
-        // // for(let algorithm of classifiers) {
-        // //    select_algorithm.append($("<option>").val(algorithm).text(algorithm))
-        // // }
-        // // messageTooltip += select_algorithm[0].outerHTML
-        // // messageTooltip += "<br/>"
-        // for(let key in predictions) { $("#divPredictions").append( key+': ' + predictions[key] + '<br/>' )}
-        // messageTooltip += $("#divPredictions")[0].outerHTML;
-        // layer._popup.setContent('something else')
-        // layer.closePopup();
-        // layer.bringToFront();
-        // layer.openPopup();
-    // })
 }
 
 function updatePopup(predictions) {