diff --git a/soitool/main_window.py b/soitool/main_window.py
index b25eef57eb9e6be9e9a42768f279bd8a34492627..15c00da7c50cc8f4b678f47402c448de0b10a844 100644
--- a/soitool/main_window.py
+++ b/soitool/main_window.py
@@ -1,8 +1,11 @@
+"""Hovedvinduet."""
 import sys
-from PySide2.QtWidgets import QTabWidget, QWidget, QMainWindow, QApplication, QHBoxLayout, QVBoxLayout, QPushButton, QTreeWidget, QLabel
+from PySide2.QtWidgets import QTabWidget, QWidget, QMainWindow, \
+    QApplication, QHBoxLayout, QVBoxLayout, QPushButton, QTreeWidget, QLabel
 
 
 class Window(QMainWindow):
+    """MainWindow, skallet til hele applikasjonen."""
 
     def __init__(self):
         super().__init__()
@@ -39,6 +42,8 @@ class Window(QMainWindow):
 
 
 class MainWidget(QWidget):
+    """Hovedwidget til applikasjonen, dette er det som blir tabs."""
+
     def __init__(self):
         super().__init__()
         layout1 = QHBoxLayout()
@@ -57,6 +62,8 @@ class MainWidget(QWidget):
 
 
 class ViewArea(QWidget):
+    """Widget som kan byttes ut med view, edit etc."""
+
     def __init__(self):
         super().__init__()
         test = QLabel("Test")
@@ -67,7 +74,7 @@ class ViewArea(QWidget):
 
 app = QApplication([])
 
-window = Window()
-window.show()
+WINDOW = Window()  # PYLINT klagde på window, så det ble WINDOW
+WINDOW.show()
 
 sys.exit(app.exec_())