diff --git a/data_utils/collect_indoor3d_data.py b/data_utils/collect_indoor3d_data.py
index 81ecdbee6..09f371303 100644
--- a/data_utils/collect_indoor3d_data.py
+++ b/data_utils/collect_indoor3d_data.py
@@ -6,10 +6,10 @@
 ROOT_DIR = os.path.dirname(BASE_DIR)
 sys.path.append(BASE_DIR)
 
-anno_paths = [line.rstrip() for line in open(os.path.join(BASE_DIR, 'meta/anno_paths.txt'))]
-anno_paths = [os.path.join(DATA_PATH, p) for p in anno_paths]
+anno_paths = [line.rstrip() for line in open(os.path.join(BASE_DIR, 'meta', 'anno_paths.txt'))]
+anno_paths = [os.path.join(DATA_PATH, p.replace('/', os.sep)) for p in anno_paths]
 
-output_folder = os.path.join(ROOT_DIR, 'data/stanford_indoor3d')
+output_folder = os.path.join(ROOT_DIR, 'data', 's3dis', 'stanford_indoor3d')
 if not os.path.exists(output_folder):
     os.mkdir(output_folder)
 
@@ -17,7 +17,7 @@
 for anno_path in anno_paths:
     print(anno_path)
     try:
-        elements = anno_path.split('/')
+        elements = anno_path.split(os.sep)
         out_filename = elements[-3]+'_'+elements[-2]+'.npy' # Area_1_hallway_1.npy
         collect_point_label(anno_path, os.path.join(output_folder, out_filename), 'numpy')
     except: