diff --git a/src/client/app/auth/assets/icon.svg b/src/client/app/auth/assets/icon.svg
new file mode 100644
index 000000000..064093cb8
--- /dev/null
+++ b/src/client/app/auth/assets/icon.svg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ca95467b08084d5485dbfd0eda3f94a3da9d2be49818b4b0d133fb99121af745
+size 2686
diff --git a/src/client/app/auth/assets/logo.svg b/src/client/app/auth/assets/logo.svg
deleted file mode 100644
index 7ee645c9e..000000000
--- a/src/client/app/auth/assets/logo.svg
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:36265b71f8c39841cc0ce778d3e832f1dbed1d5921cd4d27de106a826d8f7a54
-size 646
diff --git a/src/client/app/auth/views/index.vue b/src/client/app/auth/views/index.vue
index b9c7cf7c2..6d0ba3cda 100644
--- a/src/client/app/auth/views/index.vue
+++ b/src/client/app/auth/views/index.vue
@@ -27,7 +27,7 @@
 		<h1>サインインしてください</h1>
 		<mk-signin/>
 	</main>
-	<footer><img src="/assets/auth/logo.svg" alt="Misskey"/></footer>
+	<footer><img src="/assets/auth/icon.svg" alt="Misskey"/></footer>
 </div>
 </template>
 
@@ -144,8 +144,8 @@ export default Vue.extend({
 	> footer
 		> img
 			display block
-			width 64px
-			height 64px
-			margin 0 auto
+			width 32px
+			height 32px
+			margin 16px auto
 
 </style>