diff --git a/migration/331b-trunk/131_FR1924645.sql b/migration/331b-trunk/131_FR1924645.sql
index 56d5925117..ccaca42f99 100644
--- a/migration/331b-trunk/131_FR1924645.sql
+++ b/migration/331b-trunk/131_FR1924645.sql
@@ -1,3 +1,5 @@
 -- [ 1924645 ] Index ad_wf_activity_status too slow
 
-DROP INDEX ad_wf_activity_status;
\ No newline at end of file
+DROP INDEX ad_wf_activity_status;
+
+CREATE INDEX AD_WF_ACTIVITY_STATUS ON AD_WF_ACTIVITY(WFSTATE, PROCESSED)
diff --git a/migration/331b-trunk/postgresql/131_FR1924645.sql b/migration/331b-trunk/postgresql/131_FR1924645.sql
index 56d5925117..ccaca42f99 100644
--- a/migration/331b-trunk/postgresql/131_FR1924645.sql
+++ b/migration/331b-trunk/postgresql/131_FR1924645.sql
@@ -1,3 +1,5 @@
 -- [ 1924645 ] Index ad_wf_activity_status too slow
 
-DROP INDEX ad_wf_activity_status;
\ No newline at end of file
+DROP INDEX ad_wf_activity_status;
+
+CREATE INDEX AD_WF_ACTIVITY_STATUS ON AD_WF_ACTIVITY(WFSTATE, PROCESSED)