diff --git a/bootstrap-chosen.less b/bootstrap-chosen.less
index 08d965c..7a6dab0 100644
--- a/bootstrap-chosen.less
+++ b/bootstrap-chosen.less
@@ -444,7 +444,7 @@
   }
 }
 
-@media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min-resolution: 144dpi) {
+@media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min-resolution: 2dppx) {
   .chosen-rtl .chosen-search input[type="text"],
   .chosen-container-single .chosen-single abbr,
   .chosen-container-single .chosen-single div b,
diff --git a/bootstrap-chosen.scss b/bootstrap-chosen.scss
index cea5bbc..966247e 100644
--- a/bootstrap-chosen.scss
+++ b/bootstrap-chosen.scss
@@ -444,7 +444,7 @@
   }
 }
 
-@media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min-resolution: 144dpi) {
+@media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min-resolution: 2dppx) {
   .chosen-rtl .chosen-search input[type="text"],
   .chosen-container-single .chosen-single abbr,
   .chosen-container-single .chosen-single div b,