diff --git a/spring-integration-jdbc/src/main/resources/org/springframework/integration/jdbc/schema-postgresql.sql b/spring-integration-jdbc/src/main/resources/org/springframework/integration/jdbc/schema-postgresql.sql
index 8d09838086..5b50bf867e 100644
--- a/spring-integration-jdbc/src/main/resources/org/springframework/integration/jdbc/schema-postgresql.sql
+++ b/spring-integration-jdbc/src/main/resources/org/springframework/integration/jdbc/schema-postgresql.sql
@@ -49,7 +49,7 @@ CREATE TABLE INT_CHANNEL_MESSAGE (
 
 CREATE INDEX INT_CHANNEL_MSG_DELETE_IDX ON INT_CHANNEL_MESSAGE (REGION, GROUP_KEY, MESSAGE_ID);
 -- This is only needed if the message group store property 'priorityEnabled' is true
--- CREATE UNIQUE INDEX INT_CHANNEL_MSG_PRIORITY_IDX ON INT_CHANNEL_MESSAGE (REGION, GROUP_KEY, MESSAGE_PRIORITY DESC, CREATED_DATE, MESSAGE_SEQUENCE);
+-- CREATE UNIQUE INDEX INT_CHANNEL_MSG_PRIORITY_IDX ON INT_CHANNEL_MESSAGE (REGION, GROUP_KEY, MESSAGE_PRIORITY DESC NULLS LAST, CREATED_DATE, MESSAGE_SEQUENCE);
 
 
 CREATE TABLE INT_METADATA_STORE  (