diff --git a/packages/mdc-chips/_mixins.scss b/packages/mdc-chips/_mixins.scss
index 7ad8aa1b8da..ca395716bbe 100644
--- a/packages/mdc-chips/_mixins.scss
+++ b/packages/mdc-chips/_mixins.scss
@@ -64,6 +64,7 @@
       display: inline-flex;
       position: relative;
       align-items: center;
+      box-sizing: border-box;
       padding: 0 $mdc-chip-horizontal-padding;
       border-width: 0;
       outline: none;