diff --git a/apps/common/main/resources/less/combobox.less b/apps/common/main/resources/less/combobox.less
index 166449139..f8ae86617 100644
--- a/apps/common/main/resources/less/combobox.less
+++ b/apps/common/main/resources/less/combobox.less
@@ -38,6 +38,8 @@
 
     .btn {
         border-left: 0;
+        border-top-left-radius: 0;
+        border-bottom-left-radius: 0;
         border-color: @border-regular-control-ie;
         border-color: @border-regular-control;
         background-color: transparent;