diff --git a/fastreid/data/datasets/vehicleid.py b/fastreid/data/datasets/vehicleid.py
index 4a0ab9e..5263d0b 100644
--- a/fastreid/data/datasets/vehicleid.py
+++ b/fastreid/data/datasets/vehicleid.py
@@ -58,9 +58,11 @@ class VehicleID(ImageDataset):
             line = line.strip()
             vid = int(line.split(' ')[1])
             imgid = line.split(' ')[0]
-            img_path = osp.join(self.image_dir, imgid + '.jpg')
+            img_path = osp.join(self.image_dir, f"{imgid}.jpg")
+            imgid = int(imgid)
             if is_train:
-                vid = self.dataset_name + '_' + str(vid)
+                vid = f"{self.dataset_name}_{vid}"
+                imgid = f"{self.dataset_name}_{imgid}"
             dataset.append((img_path, vid, imgid))
 
         if is_train: return dataset
diff --git a/fastreid/data/datasets/veriwild.py b/fastreid/data/datasets/veriwild.py
index ba20bcc..269a507 100644
--- a/fastreid/data/datasets/veriwild.py
+++ b/fastreid/data/datasets/veriwild.py
@@ -64,9 +64,11 @@ class VeRiWild(ImageDataset):
             line = line.strip()
             vid = int(line.split('/')[0])
             imgid = line.split('/')[1].split('.')[0]
+            camid = int(self.imgid2camid[imgid])
             if is_train:
-                vid = self.dataset_name + '_' + str(vid)
-            dataset.append((self.imgid2imgpath[imgid], vid, self.imgid2camid[imgid]))
+                vid = f"{self.dataset_name}_{vid}"
+                camid = f"{self.dataset_name}_{camid}"
+            dataset.append((self.imgid2imgpath[imgid], vid, camid))
 
         assert len(dataset) == len(img_list_lines)
         return dataset