diff --git a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/docs/server_jpa_mdm/mdm_expansion.md b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/docs/server_jpa_mdm/mdm_expansion.md
index 7acda791000..51180269ded 100644
--- a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/docs/server_jpa_mdm/mdm_expansion.md
+++ b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/docs/server_jpa_mdm/mdm_expansion.md
@@ -18,13 +18,16 @@ GET http://example.com:8000/Observation?subject:mdm=Patient/1
 
 This `:mdm` parameter qualifier instructs an interceptor in HAPI fhir to expand the set of resources included in the search by their MDM-matched resources. The two above HTTP requests will return the same result. 
 
+
+<div class="helpWarningCalloutBox">
 One important caveat is that chaining is currently not supported when using this prefix.
+</div>
 
 ## Enabling MDM Expansion
 
 On top of needing to instantiate an MDM module, you must enable this feature in the [DaoConfig](/hapi-fhir/apidocs/hapi-fhir-jpaserver-api/ca/uhn/fhir/jpa/api/config/DaoConfig.html) bean, using the [Allow MDM Expansion](/hapi-fhir/apidocs/hapi-fhir-jpaserver-api/ca/uhn/fhir/jpa/api/config/DaoConfig.html#setAllowMdmExpansion(boolean)) property.
 
-<div class="helpInfoCalloutBox">
-It is important to note that enabling this functionality can lead to incorrect data being returned by a request, if your MDM links are incorrect.
+<div class="helpWarningCalloutBox">
+It is important to note that enabling this functionality can lead to incorrect data being returned by a request, if your MDM links are incorrect. Use with caution.
 </div>