diff --git a/engine/api/workflow/dao.go b/engine/api/workflow/dao.go
index 0a6c5c5957..46854796c1 100644
--- a/engine/api/workflow/dao.go
+++ b/engine/api/workflow/dao.go
@@ -1089,9 +1089,7 @@ func checkHooks(ctx context.Context, db gorp.SqlExecutor, w *sdk.Workflow, n *sd
 			h2 := n.Hooks[j]
 			if i != j && h.Ref() == h2.Ref() {
 				log.ErrorWithStackTrace(ctx, sdk.NewErrorFrom(sdk.ErrWrongRequest, "invalid workflow: duplicate hook %s", model.Name))
-				if !sdk.IsInInt64Array(int64(i), duplicateHookIdx) && !sdk.IsInInt64Array(int64(i), duplicateHookIdx) {
-					duplicateHookIdx = append(duplicateHookIdx, int64(j))
-				}
+				duplicateHookIdx = append(duplicateHookIdx, int64(j))
 			}
 		}
 	}