diff --git a/akka-components-persistence-projection-r2dbc/src/main/resources/reference.conf b/akka-components-persistence-projection-r2dbc/src/main/resources/reference.conf
index 6257321..f325a37 100644
--- a/akka-components-persistence-projection-r2dbc/src/main/resources/reference.conf
+++ b/akka-components-persistence-projection-r2dbc/src/main/resources/reference.conf
@@ -1,2 +1,4 @@
 # override this to use custom settings for the default query plugin
-net.sc8s.akka.components.persistence.projection.r2dbc.default = ${akka.persistence.r2dbc}
\ No newline at end of file
+net.sc8s.akka.components.persistence.projection.r2dbc.default = ${akka.persistence.r2dbc}
+
+net.sc8s.akka.components.persistence.projection.r2dbc.default.connection-factory = ${akka.persistence.r2dbc.postgres}