diff --git a/less/_modal.less b/less/_modal.less
index 542a8dd2ad..9d1659214c 100644
--- a/less/_modal.less
+++ b/less/_modal.less
@@ -33,7 +33,7 @@
     transform: translate(0, -25%);
     transform: transition .3s ease-out;
   }
-  &.in .modal-dialog { .translate(0, 0) }
+  &.in .modal-dialog { transform: translate(0, 0); }
 }
 .modal-open .modal {
   overflow-x: hidden;