diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index abb95b2..d9f3cd3 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -27,6 +27,8 @@ spring:
 
 hapi:
   fhir:
+    ### enable to set the Server URL
+#    server_address: http://hapi.fhir.org/baseR4
     ### This is the FHIR version. Choose between, DSTU2, DSTU3, R4 or R5
     fhir_version: R4
 #    defer_indexing_for_codesystems_of_size: 101