diff --git a/src/definitions/modules/popup.less b/src/definitions/modules/popup.less
index a000c1b50..fc88ea103 100755
--- a/src/definitions/modules/popup.less
+++ b/src/definitions/modules/popup.less
@@ -249,7 +249,7 @@
 }
 .ui.inverted.popup:before {
   background-color: @invertedArrowColor;
-  box-shadow: none;
+  box-shadow: none !important;
 }
 
 /*--------------