diff --git a/packages/bbui/src/ButtonGroup/ButtonGroup.svelte b/packages/bbui/src/ButtonGroup/ButtonGroup.svelte
index 3768fc1954..7c53f642b0 100644
--- a/packages/bbui/src/ButtonGroup/ButtonGroup.svelte
+++ b/packages/bbui/src/ButtonGroup/ButtonGroup.svelte
@@ -2,7 +2,7 @@
   import "@spectrum-css/buttongroup/dist/index-vars.css"
 
   export let vertical = false
-  export let gap = ""
+  export let gap = "M"
 
   $: gapStyle =
     gap === "L"