diff --git a/data/db-schema/src/main/resources/net/corda/db/schema/statemanager/migration/state-manager-migration-v5.1.xml b/data/db-schema/src/main/resources/net/corda/db/schema/statemanager/migration/state-manager-migration-v5.1.xml
index c23dd5696e..20084adc1c 100644
--- a/data/db-schema/src/main/resources/net/corda/db/schema/statemanager/migration/state-manager-migration-v5.1.xml
+++ b/data/db-schema/src/main/resources/net/corda/db/schema/statemanager/migration/state-manager-migration-v5.1.xml
@@ -30,7 +30,8 @@
                 <constraints nullable="false"/>
             </column>
         </createTable>
-        <createIndex tableName="state" indexName="state_version_idx">
+        <createIndex tableName="state" indexName="state_key_version_idx">
+            <column name="key"/>
             <column name="version"/>
         </createIndex>
         <addPrimaryKey columnNames="key" constraintName="state_key" tableName="state"/>