diff --git a/README.md b/README.md
index eb980c8..da2322d 100644
--- a/README.md
+++ b/README.md
@@ -684,7 +684,7 @@ The following guidelines indicate when the use of an index should be reconsidere
 
 **- Tables that have frequent, large batch updates or insert operations.
 
-Indexes should not be used on columns that contain a high number of NULL values.
+**- Indexes should not be used on columns that contain a high number of NULL values.
 
 Columns that are frequently manipulated should not be indexed.