diff --git a/src/theme/diff.scss b/src/theme/diff.scss
index d3e51d4..272dbb0 100644
--- a/src/theme/diff.scss
+++ b/src/theme/diff.scss
@@ -92,7 +92,6 @@ table th:not([align]) {
         grid-template-columns: 50px 50px 1fr;
         font-family: 'Roboto Mono', monospace;
         height: 23px;
-        user-select: none;
 
         &-content {
             padding: 2px 6px;
@@ -105,6 +104,7 @@ table th:not([align]) {
             text-align: right;
             color: var(--cds-global-color-gray-500);
             font-size: var(--cds-global-typography-font-size-2);
+            user-select: none;
         }
 
         &-old-number {