diff --git a/less/bootstrap-select.less b/less/bootstrap-select.less
index a7a8fda5d..d209d0552 100644
--- a/less/bootstrap-select.less
+++ b/less/bootstrap-select.less
@@ -393,6 +393,7 @@ select.selectpicker {
     height: 1em;
     border-style: solid;
     border-width: 0 0.26em 0.26em 0;
+    transform-style: preserve-3d;
     transform: rotate(45deg);
   }
 }
diff --git a/sass/bootstrap-select.scss b/sass/bootstrap-select.scss
index 1d9537645..0c5e5cc87 100644
--- a/sass/bootstrap-select.scss
+++ b/sass/bootstrap-select.scss
@@ -411,6 +411,7 @@ select.selectpicker {
     height: 1em;
     border-style: solid;
     border-width: 0 0.26em 0.26em 0;
+    transform-style: preserve-3d;
     transform: rotate(45deg);
   }
 }