diff --git a/e2e/pipelines/test_preprocessing_pipeline.py b/e2e/pipelines/test_preprocessing_pipeline.py
index 8894113913..4667454276 100644
--- a/e2e/pipelines/test_preprocessing_pipeline.py
+++ b/e2e/pipelines/test_preprocessing_pipeline.py
@@ -2,8 +2,6 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-import json
-
 from haystack import Pipeline
 from haystack.components.classifiers import DocumentLanguageClassifier
 from haystack.components.converters import TextFileToDocument