diff --git a/src/client/app/desktop/views/components/post-form.vue b/src/client/app/desktop/views/components/post-form.vue
index 98c16cd5d..a971e3d05 100644
--- a/src/client/app/desktop/views/components/post-form.vue
+++ b/src/client/app/desktop/views/components/post-form.vue
@@ -221,6 +221,12 @@ export default Vue.extend({
 			});
 		}
 
+		// keep cw when reply
+		if (this.reply && this.reply.cw != null) {
+			this.useCw = true;
+			this.cw = this.reply.cw;
+		}
+
 		this.$nextTick(() => {
 			// 書きかけの投稿を復元
 			if (!this.instant && !this.mention) {
diff --git a/src/client/app/mobile/views/components/post-form.vue b/src/client/app/mobile/views/components/post-form.vue
index 00d0eebd6..f4bbc4fc0 100644
--- a/src/client/app/mobile/views/components/post-form.vue
+++ b/src/client/app/mobile/views/components/post-form.vue
@@ -211,6 +211,12 @@ export default Vue.extend({
 			});
 		}
 
+		// keep cw when reply
+		if (this.reply && this.reply.cw != null) {
+			this.useCw = true;
+			this.cw = this.reply.cw;
+		}
+
 		this.focus();
 
 		this.$nextTick(() => {