diff --git a/js/gamutable.es6.js b/js/gamutable.es6.js
index 80afc10..24ba2c5 100644
--- a/js/gamutable.es6.js
+++ b/js/gamutable.es6.js
@@ -233,7 +233,7 @@ let monTableau = {
 			} else {
 				let filtreColVal_visible = {};
 				filtreColVal_visible[head] = this.filtreColVal[head].filter((v) => {
-					return v.indexOf(val) !== -1;
+					return v.toLowerCase().indexOf(val.toLowerCase()) !== -1;
 				});
 				return filtreColVal_visible;
 			}
diff --git a/js/gamutable.js b/js/gamutable.js
index 95fe378..9027738 100644
--- a/js/gamutable.js
+++ b/js/gamutable.js
@@ -286,7 +286,7 @@ var monTableau = {
       } else {
         var filtreColVal_visible = {};
         filtreColVal_visible[head] = this.filtreColVal[head].filter(function (v) {
-          return v.indexOf(val) !== -1;
+          return v.toLowerCase().indexOf(val.toLowerCase()) !== -1;
         });
         return filtreColVal_visible;
       }