diff --git a/tests/testing_utils.py b/tests/testing_utils.py
index a00f5f954..cf05b1ece 100644
--- a/tests/testing_utils.py
+++ b/tests/testing_utils.py
@@ -231,7 +231,7 @@ def tokenize(sample):
                 add_special_tokens=False,
             )
 
-    elif ds_name in ("flickr30k",):
+    elif ds_name == "flickr30k":
         def preprocess(sample):
             return sample