diff --git a/models/actions/run_job.go b/models/actions/run_job.go
index e8a83a04e27..4f770270684 100644
--- a/models/actions/run_job.go
+++ b/models/actions/run_job.go
@@ -100,7 +100,7 @@ type ActionRunJob struct {
 
 	// IsReusableCaller marks this job as a reusable workflow caller.
 	// Caller jobs do not run on a runner; their status is derived from their child jobs.
-	IsReusableCaller bool `xorm:"index NOT NULL DEFAULT FALSE"`
+	IsReusableCaller bool `xorm:"NOT NULL DEFAULT FALSE"`
 	// IsExpanded reports whether this job's lazy expansion (children-row insertion) is complete.
 	// For a reusable workflow caller, true means children rows exist and CallPayload is populated.
 	IsExpanded bool `xorm:"NOT NULL DEFAULT FALSE"`