diff --git a/tensorboard/plugins/debugger_v2/tf_debugger_v2_plugin/views/timeline/timeline_component.css b/tensorboard/plugins/debugger_v2/tf_debugger_v2_plugin/views/timeline/timeline_component.css
index eb30ce27e8b..10d889399cc 100644
--- a/tensorboard/plugins/debugger_v2/tf_debugger_v2_plugin/views/timeline/timeline_component.css
+++ b/tensorboard/plugins/debugger_v2/tf_debugger_v2_plugin/views/timeline/timeline_component.css
@@ -66,11 +66,8 @@ limitations under the License.
   position: absolute;
   right: 40px;
   --mdc-slider-handle-width: 80px;
-  --mat-slider-handle-width: 80px;
   --mdc-slider-handle-height: 16px;
-  --mat-slider-handle-height: 16px;
   --mdc-slider-handle-shape: 5px;
-  --mat-slider-handle-shape: 5px;
 }
 
 ::ng-deep .mat-mdc-focus-indicator {
diff --git a/tensorboard/webapp/theme/_tb_theme.template.scss b/tensorboard/webapp/theme/_tb_theme.template.scss
index 9dbca70301b..46a748a1281 100644
--- a/tensorboard/webapp/theme/_tb_theme.template.scss
+++ b/tensorboard/webapp/theme/_tb_theme.template.scss
@@ -303,13 +303,9 @@ $tb-dark-theme: map_merge(
   body.dark-mode {
     mat-slider {
       --mdc-slider-handle-width: 12px;
-      --mat-slider-handle-width: 12px;
       --mdc-slider-handle-height: 12px;
-      --mat-slider-handle-height: 12px;
       --mdc-slider-active-track-height: 2px;
-      --mat-slider-active-track-height: 2px;
       --mdc-slider-inactive-track-height: 2px;
-      --mat-slider-inactive-track-height: 2px;
     }
 
     a,
@@ -319,13 +315,9 @@ $tb-dark-theme: map_merge(
       --tb-icon-button-width: 40px;
       --tb-icon-button-height: 40px;
       --mdc-text-button-label-text-tracking: normal;
-      --mat-text-button-label-text-tracking: normal;
       --mdc-filled-button-label-text-tracking: normal;
-      --mat-filled-button-label-text-tracking: normal;
       --mdc-outlined-button-label-text-tracking: normal;
-      --mat-outlined-button-label-text-tracking: normal;
       --mdc-protected-button-label-text-tracking: normal;
-      --mat-protected-button-label-text-tracking: normal;
 
       &[mat-icon-button].mat-mdc-icon-button {
         width: var(--tb-icon-button-width);