diff --git a/app/logical/related_tag_calculator.rb b/app/logical/related_tag_calculator.rb
index 8baf2fd93..4ac42aaad 100644
--- a/app/logical/related_tag_calculator.rb
+++ b/app/logical/related_tag_calculator.rb
@@ -1,6 +1,8 @@
 module RelatedTagCalculator
   def self.similar_tags_for_search(tag_query, search_sample_size: 1000, tag_sample_size: 250, category: nil)
     search_count = Post.fast_count(tag_query)
+    return [] if search_count.nil?
+
     search_sample_size = [search_count, search_sample_size].min
     return [] if search_sample_size <= 0