diff --git a/src/app/components/results-graph/results-graph.component.ts b/src/app/components/results-graph/results-graph.component.ts
index d52baff5c5709a2375860b0806b5ed355fa4dd8d..83b55ff9897869cd215e8deadf8688d4a2b6c258 100644
--- a/src/app/components/results-graph/results-graph.component.ts
+++ b/src/app/components/results-graph/results-graph.component.ts
@@ -60,9 +60,6 @@ export class ResultsGraphComponent { //implements AfterViewInit {
         this._graphTypeComponent.selectedValue = this._currentGraphType;
     }
 
-    // http://www.chartjs.org/docs/latest/charts/line.html#dataset-properties
-    //     showLine
-
     public updateView() {
         switch (this._currentGraphType) {
             case GraphType.Histogram:
@@ -171,8 +168,9 @@ export class ResultsGraphComponent { //implements AfterViewInit {
                 {
                     label: "",
                     data: dat,
-                    // borderColor: '#000000',
-                    // backgroundColor: '#000000'
+                    borderColor: "#808080", // couleur de la ligne
+                    backgroundColor: "rgba(0,0,0,0)",  // couleur de remplissage sous la courbe : transparent
+                    showLine: "true"
                 }
             ]
         };