diff --git a/packages/block-editor/src/components/block-list/style.scss b/packages/block-editor/src/components/block-list/style.scss
index b7b520c87f32a6..3263503b3f5988 100644
--- a/packages/block-editor/src/components/block-list/style.scss
+++ b/packages/block-editor/src/components/block-list/style.scss
@@ -509,9 +509,8 @@
 		border: $border-width solid $blue-medium-focus;
 		border-left: none;
 		box-shadow: inset $block-left-border-width 0 0 0 $blue-medium-focus;
-		height: $block-toolbar-height + $border-width;
+		height: $icon-button-size + 2 * $border-width;
 		font-size: $default-font-size;
-		line-height: $block-toolbar-height - $grid-size;
 		padding-left: $grid-size;
 		padding-right: $grid-size;