diff --git a/source/includes/fact-query-min-max.rst b/source/includes/fact-query-min-max.rst
index 34a9d8e2359..e9a789dd756 100644
--- a/source/includes/fact-query-min-max.rst
+++ b/source/includes/fact-query-min-max.rst
@@ -3,7 +3,9 @@ should avoid normal query planning. Instead they construct an index scan where
 the index bounds are explicitly specified by the values given in
 :operator:`min` and :operator:`max`.
 
-If one of the two boundaries is not specified, then the query plan will be
-an index scan that is unbounded on one side. This may degrade performance
-compared to a query containing neither operator, or one that uses both
-operators to more tightly constrain the index scan.
+.. warning::
+
+   If one of the two boundaries is not specified, then the query plan will be
+   an index scan that is unbounded on one side. This may degrade performance
+   compared to a query containing neither operator, or one that uses both
+   operators to more tightly constrain the index scan.