diff --git a/packages/client/src/components/MkNoteDetailed.vue b/packages/client/src/components/MkNoteDetailed.vue
index 62b12a9096..3f8b92e0f5 100644
--- a/packages/client/src/components/MkNoteDetailed.vue
+++ b/packages/client/src/components/MkNoteDetailed.vue
@@ -547,10 +547,6 @@ onUnmounted(() => {
 		// }
 	}
 
-	&.max-width_500px {
-		font-size: 0.9em;
-	}
-
 	&.max-width_450px {
 		> .reply-to-more:first-child {
 			padding-top: 14px;