diff --git a/app/models/post_mover.rb b/app/models/post_mover.rb
index 845226959..fdd972322 100644
--- a/app/models/post_mover.rb
+++ b/app/models/post_mover.rb
@@ -78,7 +78,7 @@ class PostMover
     end
 
     PostReply.where("reply_id in (:post_ids) OR post_id in (:post_ids)", post_ids: post_ids).each do |post_reply|
-      if post_reply.reply.topic_id != post_reply.post.topic_id
+      if post_reply.post && post_reply.reply && post_reply.reply.topic_id != post_reply.post.topic_id
         PostReply.delete_all(reply_id: post_reply.reply.id, post_id: post_reply.post.id)
       end
     end
diff --git a/spec/models/post_mover_spec.rb b/spec/models/post_mover_spec.rb
index 03450fe05..1a8077804 100644
--- a/spec/models/post_mover_spec.rb
+++ b/spec/models/post_mover_spec.rb
@@ -80,7 +80,18 @@ describe PostMover do
             topic.move_posts(
               user,
               [p2.id],
-              title: 'GOT is a very addictive showw', category_id: category.id
+              title: 'GOT is a very addictive show', category_id: category.id
+            )
+
+            expect(p2.reload.replies).to eq([])
+          end
+
+          it "doesn't raise errors with deleted replies" do
+            p4.trash!
+            topic.move_posts(
+              user,
+              [p2.id],
+              title: 'GOT is a very addictive show', category_id: category.id
             )
 
             expect(p2.reload.replies).to eq([])
@@ -101,7 +112,7 @@ describe PostMover do
             topic.move_posts(
               user,
               [p4.id],
-              title: 'GOT is a very addictive showw', category_id: category.id
+              title: 'GOT is a very addictive show', category_id: category.id
             )
 
             expect(p2.reload.replies).to eq([p5])
@@ -122,7 +133,7 @@ describe PostMover do
             topic.move_posts(
               user,
               [p2.id, p4.id],
-              title: 'GOT is a very addictive showw', category_id: category.id
+              title: 'GOT is a very addictive show', category_id: category.id
             )
 
             expect(p2.reload.replies).to eq([p4])