diff --git a/src/documents/management/commands/document_consumer.py b/src/documents/management/commands/document_consumer.py
index 9ba1b1a87..232a5b23c 100644
--- a/src/documents/management/commands/document_consumer.py
+++ b/src/documents/management/commands/document_consumer.py
@@ -21,7 +21,7 @@ logger = logging.getLogger(__name__)
 
 
 def _tags_from_path(filepath):
-    """Walk up the directory tree from filepath to CONSUMPTION_DIr
+    """Walk up the directory tree from filepath to CONSUMPTION_DIR
        and get or create Tag IDs for every directory.
     """
     tag_ids = set()
diff --git a/src/documents/parsers.py b/src/documents/parsers.py
index 3f0879b3c..a2eb14cef 100644
--- a/src/documents/parsers.py
+++ b/src/documents/parsers.py
@@ -273,10 +273,9 @@ class DocumentParser(LoggingMixin):
         self.date = None
         self.progress_callback = progress_callback
 
-    def progress(self, current, max):
-        print(self.progress_callback)
+    def progress(self, current_progress, max_progress):
         if self.progress_callback:
-            self.progress_callback(current, max)
+            self.progress_callback(current_progress, max_progress)
 
     def extract_metadata(self, document_path, mime_type):
         return []
diff --git a/src/paperless_tesseract/parsers.py b/src/paperless_tesseract/parsers.py
index 52b50e983..4e5ceac1b 100644
--- a/src/paperless_tesseract/parsers.py
+++ b/src/paperless_tesseract/parsers.py
@@ -190,11 +190,11 @@ class RasterisedDocumentParser(DocumentParser):
             # Also, no archived file.
             if not self.text:
                 # However, if we don't have anything, fail:
-                raise ParseError(e.__class__.__name__ + ": " + str(e))
+                raise ParseError(f"{e.__class__.__name__}: {str(e)}")
 
         except Exception as e:
             # Anything else is probably serious.
-            raise ParseError(e.__class__.__name__ + ": " + str(e))
+            raise ParseError(f"{e.__class__.__name__}: {str(e)}")
 
         if not self.text:
             # This may happen for files that don't have any text.