diff --git a/lib/rating/models/rating/rating.rb b/lib/rating/models/rating/rating.rb
index fccf85c..308503b 100644
--- a/lib/rating/models/rating/rating.rb
+++ b/lib/rating/models/rating/rating.rb
@@ -26,7 +26,7 @@ module Rating
 
         sql = %(
           SELECT
-            (CAST(#{total_count} AS DECIMAL(17, 14)) / #{distinct_count}) count_avg,
+            (CAST(#{total_count} AS DECIMAL(25, 16)) / #{distinct_count}) count_avg,
             COALESCE(AVG(value), 0)                                       rating_avg
           FROM #{rate_table_name}
           WHERE