diff --git a/dst-domain-match-check.rb b/dst-domain-match-check.rb
index f1c9726..4486957 100755
--- a/dst-domain-match-check.rb
+++ b/dst-domain-match-check.rb
@@ -93,10 +93,15 @@ def check_domain_in_db(domain)
   sql_query = "SELECT * FROM #{$table_name} WHERE dstdom IN ( #{domains.map { |d| "'#{d}'" }.join(" , ")} )"
   log("Running SQL query: [ \"#{sql_query}\" ]")
   results = db_client.query(sql_query)
-  return false if results.nil?
+  if results.nil?
+	db_client.close
+	return false
+  end
   if results.size > 0
+    db_client.close
     return true
   end
+  db_client.close
   return false
 end