diff --git a/chunk_codegen.py b/chunk_codegen.py
index 88d917809..22d48f5d6 100644
--- a/chunk_codegen.py
+++ b/chunk_codegen.py
@@ -194,7 +194,7 @@ class FlowTracer(object):
                     if type(i) == type(mix_flow_node) and i != mix_flow_node:
                         main_flow_var = i
                 # if mix flow is a broadcast in chunk dim,
-                # TODO need to move that flow out of the chunk
+                # TODO: need to move that flow out of the chunk
                 mix_flow_node_dim = index_tracer._get_node_chunk_dim(
                     self.node_list[end_idx], end_dim, node
                 )
@@ -1200,7 +1200,7 @@ class ChunkRegionSearch(object):
                     continue
                 # it means an index create 2 copy of itself
                 # eg. a = torch.matmul(x, x.transpose(-1, -2))
-                # TODO currently remove it, deal with this in future
+                # TODO: currently remove it, deal with this in future
                 if input_dim1 == input_dim2 and output_dim1 != output_dim2:
                     remove_list.append(chunk_infos[idx1])
                     remove_list.append(chunk_infos[idx2])
@@ -1216,7 +1216,7 @@ class ChunkRegionSearch(object):
         chunk_infos = []
         for end_dim, end_trace_idx in enumerate(end_trace["idx"]):
             if len(start_traces) > 1:
-                # TODO implement multi input chunk
+                # TODO: implement multi input chunk
                 continue
             for start_node, start_trace in start_traces.items():
                 for start_dim, start_trace_idx in enumerate(start_trace["idx"]):
@@ -1421,7 +1421,7 @@ def _find_chunk_compute_input_and_output_nodes(nodes: List[Node]):
 
     # if a node has a user node which is not in the node list
     # we treat that user node as the node receiving the current node output
-    # TODO it is unsafe to remove non compute node here
+    # TODO: it is unsafe to remove non compute node here
     for node in nodes:
         for output_node in node.users.keys():
             if (