diff --git a/libreplan-business/src/main/resources/db.changelog-1.2.xml b/libreplan-business/src/main/resources/db.changelog-1.2.xml
index 1a188bc90..aae3151a4 100644
--- a/libreplan-business/src/main/resources/db.changelog-1.2.xml
+++ b/libreplan-business/src/main/resources/db.changelog-1.2.xml
@@ -329,6 +329,7 @@
         <addForeignKeyConstraint constraintName="sum_charged_effort_order_element_fkey"
             baseTableName="sum_charged_effort" baseColumnNames="order_element"
             referencedTableName="order_element" referencedColumnNames="id" />
+        <dropForeignKeyConstraint baseTableName="order_element" constraintName="sum_charged_effort_id_fkey"/>
         <dropColumn tableName="order_element" columnName="sum_charged_effort_id"/>
     </changeSet>
 
@@ -518,4 +519,4 @@
             columnDataType="BOOLEAN" />
     </changeSet>
 
-</databaseChangeLog>
\ No newline at end of file
+</databaseChangeLog>