diff --git a/app/models/fact_check.rb b/app/models/fact_check.rb
index 9b6744559..d409f1330 100644
--- a/app/models/fact_check.rb
+++ b/app/models/fact_check.rb
@@ -59,7 +59,7 @@ def self.get_exported_data(query, team)
 
   def clean_tags
     return if self.tags.blank?
-    self.tags = self.tags.map! { |tag| tag.strip.gsub(/^#/, '') }.uniq
+    self.tags = self.tags.map { |tag| tag.strip.gsub(/^#/, '') }.uniq
   end
 
   private