diff --git a/src/app/ui/custom-theme.scss b/src/app/ui/custom-theme.scss
index 8e536856f..f5a3ced18 100644
--- a/src/app/ui/custom-theme.scss
+++ b/src/app/ui/custom-theme.scss
@@ -83,7 +83,6 @@ $data-table-thumbnail-width: 35px;
 $data-table-cell-min-width: 120px;
 $data-table-cell-min-width--no-grow: 120px;
 $data-table-cell-min-width--fileSize: 80px !important;
-$data-table-cell-outline: none;
 $data-table-hover-color: #e0f7fa;
 $data-table-selection-color: #e0f7fa;