diff --git a/example/example.py b/example/example.py
index 93a59c7..109a0a8 100755
--- a/example/example.py
+++ b/example/example.py
@@ -80,7 +80,7 @@
         f.write(document_image)
     print(f"""
     ---------------------------------------------------------------------------
-                        Web API version: {api.ping().version}
+                        Web API version: {api.healthz().version}
     ---------------------------------------------------------------------------
                     Document Overall Status: {doc_overall_status}
                     Document Number Visual: {doc_number_visual}
diff --git a/regula/documentreader/webclient/ext/api/document_reader_api.py b/regula/documentreader/webclient/ext/api/document_reader_api.py
index 2493a06..b554471 100755
--- a/regula/documentreader/webclient/ext/api/document_reader_api.py
+++ b/regula/documentreader/webclient/ext/api/document_reader_api.py
@@ -1,4 +1,3 @@
-import base64
 from typing import Union
 
 from regula.documentreader.webclient import ProcessResponse