diff --git a/src/components/Thread.vue b/src/components/Thread.vue
index d193889ee3..66775317e1 100644
--- a/src/components/Thread.vue
+++ b/src/components/Thread.vue
@@ -317,7 +317,7 @@ export default {
 }
 </script>
 
-<style lang="scss">
+<style lang="scss" scoped>
 #mail-message {
 	margin-bottom: 30vh;