diff --git a/data/config-schema/src/main/resources/net/corda/schema/configuration/messaging/1.0/subscription.json b/data/config-schema/src/main/resources/net/corda/schema/configuration/messaging/1.0/subscription.json
index 8e66325e83..1b0b1db681 100644
--- a/data/config-schema/src/main/resources/net/corda/schema/configuration/messaging/1.0/subscription.json
+++ b/data/config-schema/src/main/resources/net/corda/schema/configuration/messaging/1.0/subscription.json
@@ -65,6 +65,13 @@
           "minimum": 1,
           "maximum": 2147483647,
           "default": 20
+        },
+        "pollTimeout": {
+          "description": "The length of time in milliseconds that the mediator pattern consumers wait for a response from the bus when calling poll.",
+          "type": "integer",
+          "minimum": 100,
+          "maximum": 2147483647,
+          "default": 50
         }
       }
     }