diff --git a/src/components/post_status_form/post_status_form.vue b/src/components/post_status_form/post_status_form.vue
index 077757ec..79eca78f 100644
--- a/src/components/post_status_form/post_status_form.vue
+++ b/src/components/post_status_form/post_status_form.vue
@@ -600,8 +600,11 @@
     height: calc(var(--post-line-height) * 1em);
     min-height: calc(var(--post-line-height) * 1em);
     resize: none;
-    border-top-left-radius: 0;
-    border-top-right-radius: 0;
+
+    &.-has-subject {
+      border-top-left-radius: 0;
+      border-top-right-radius: 0;
+    }
 
     &.-has-subject {
       border-top-left-radius: 0;