diff --git a/frontend/lib/registry/components/v2-button-primary/index.ts b/frontend/lib/registry/components/v2-button-primary/index.ts
index 2e4c53eb..2aa4844c 100644
--- a/frontend/lib/registry/components/v2-button-primary/index.ts
+++ b/frontend/lib/registry/components/v2-button-primary/index.ts
@@ -43,7 +43,7 @@ export const V2ButtonPrimaryDefinition = createComponentDefinition({
       backgroundColor: "#3B83F6",
     },
   },
-  defaultSize: { width: 140, height: 40 },
+  defaultSize: { width: 100, height: 40 },
   configPanel: V2ButtonConfigPanel,
   icon: "MousePointer",
   tags: ["버튼", "액션", "클릭"],