diff --git a/PFERD/download_summary.py b/PFERD/download_summary.py
index 6b0b6e8..da59285 100644
--- a/PFERD/download_summary.py
+++ b/PFERD/download_summary.py
@@ -1,54 +1,79 @@
-from typing import List
+"""
+Provides a summary that keeps track of new modified or deleted files.
+"""
 import logging
 from pathlib import Path
+from typing import List
+
 from .logging import PrettyLogger
 
 
 class DownloadSummary:
+    """
+    Keeps track of all new, modified or deleted files and provides a summary.
+    """
 
     def __init__(self) -> None:
         self._new_files: List[Path] = []
-        self._changed_files: List[Path] = []
+        self._modified_files: List[Path] = []
         self._deleted_files: List[Path] = []
 
     def merge(self, summary: 'DownloadSummary') -> None:
+        """
+        Merges ourselves with the passed summary. Modifies this object, but not the passed one.
+        """
+        # This is our own class!
+        # pylint: disable=protected-access
         self._new_files += summary._new_files
-        self._changed_files += summary._changed_files
+        self._modified_files += summary._modified_files
         self._deleted_files += summary._deleted_files
 
     def add_deleted_file(self, path: Path) -> None:
+        """
+        Registers a file as deleted.
+        """
         self._deleted_files.append(path)
 
-    def add_changed_file(self, path: Path) -> None:
-        self._changed_files.append(path)
+    def add_modified_file(self, path: Path) -> None:
+        """
+        Registers a file as changed.
+        """
+        self._modified_files.append(path)
 
     def add_new_file(self, path: Path) -> None:
+        """
+        Registers a file as new.
+        """
         self._new_files.append(path)
 
-    def _has_no_updates(self) -> bool:
-        return len(self._new_files) == 0 and len(self._changed_files) == 0 and len(self._deleted_files) == 0
+    def _has_updates(self) -> bool:
+        return bool(self._new_files or self._modified_files or self._deleted_files)
 
     def print(self, logger: logging.Logger, pretty: PrettyLogger) -> None:
+        """
+        Prints this summary.
+        """
         logger.info("")
         logger.info("Summary: ")
-        if self._has_no_updates():
-            logger.info("nothing changed")
-        else:
-            if len(self._new_files) > 0:
-                logger.info("New Files:")
-                for file in self._new_files:
-                    pretty.new_file(file)
+        if not self._has_updates():
+            logger.info("Nothing changed!")
+            return
 
-            logger.info("")
+        if self._new_files:
+            logger.info("New Files:")
+            for file in self._new_files:
+                pretty.new_file(file)
 
-            if len(self._changed_files) > 0:
-                logger.info("Modified Files:")
-                for file in self._changed_files:
-                    pretty.modified_file(file)
+        logger.info("")
 
-            logger.info("")
+        if self._modified_files:
+            logger.info("Modified Files:")
+            for file in self._modified_files:
+                pretty.modified_file(file)
 
-            if len(self._deleted_files) > 0:
-                logger.info("Deleted Files:")
-                for file in self._deleted_files:
-                    pretty.deleted_file(file)
+        logger.info("")
+
+        if self._deleted_files:
+            logger.info("Deleted Files:")
+            for file in self._deleted_files:
+                pretty.deleted_file(file)
diff --git a/PFERD/organizer.py b/PFERD/organizer.py
index 527d90c..67bf83d 100644
--- a/PFERD/organizer.py
+++ b/PFERD/organizer.py
@@ -72,7 +72,7 @@ class Organizer(Location):
                 dst_absolute.touch()
                 return
 
-            self.download_summary.add_changed_file(dst_absolute)
+            self.download_summary.add_modified_file(dst_absolute)
             PRETTY.modified_file(dst_absolute)
         else:
             self.download_summary.add_new_file(dst_absolute)