diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-postgresql.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-postgresql.sql
index 026a954d..ec69b16e 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-postgresql.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-postgresql.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);