diff --git a/src/ir.cc b/src/ir.cc
index 97b51b5ee..b40723a84 100644
--- a/src/ir.cc
+++ b/src/ir.cc
@@ -112,8 +112,6 @@ ForFrame PipelinedFor(PrimExpr start, const PrimExpr &stop, int num_stages,
       anno.Set("tl_pipeline_order", order);
     if (!stages.empty())
       anno.Set("tl_pipeline_stage", stages);
-    if (!sync.empty())
-      anno.Set("tl_pipeline_sync", sync);
     if (!groups.empty())
       anno.Set("tl_pipeline_group", groups);
     Optional<PrimExpr> step =
diff --git a/tilelang/analysis/nested_loop_checker.py b/tilelang/analysis/nested_loop_checker.py
index 51da7f4c8..96f24ed17 100644
--- a/tilelang/analysis/nested_loop_checker.py
+++ b/tilelang/analysis/nested_loop_checker.py
@@ -11,7 +11,7 @@
 def is_pipelined_for(op: For) -> bool:
     """Check if a for loop is pipelined."""
 
-    anno_keys = ["num_stages", "tl_pipeline_order", "tl_pipeline_stage", "tl_pipeline_sync", "tl_pipeline_group"]
+    anno_keys = ["num_stages", "tl_pipeline_order", "tl_pipeline_stage", "tl_pipeline_group"]
     return any(key in op.annotations for key in anno_keys)