diff --git a/soitool/modules/module_predefined_codes.py b/soitool/modules/module_predefined_codes.py
index 2b16384696da299d9fff1cdf60642e479020ee43..67281cf4ada4b5826d4a3040bed0020c7d3653f6 100644
--- a/soitool/modules/module_predefined_codes.py
+++ b/soitool/modules/module_predefined_codes.py
@@ -14,12 +14,12 @@ from PySide2.QtWidgets import (
     QListWidgetItem,
     QAbstractItemView,
     QFormLayout,
-    QPushButton,
     QSpinBox,
 )
 from PySide2 import QtGui
 from PySide2.QtCore import Qt
 from soitool.modules.module_base import ModuleBase, HEADLINE_FONT, resize_table
+from soitool.accept_reject_dialog import AcceptRejectDialog
 
 ALPHABET = string.ascii_uppercase
 HEADLINE = "FORHÅNDSAVTALTE KODER"
@@ -406,7 +406,7 @@ class PredefinedCodesModule(ModuleBase, QWidget, metaclass=Meta):
             # Modify dialog
             dialog.edit_column_height.setMinimum(self.minimum_column_height)
             dialog.edit_column_height.setValue(self.maximum_column_height)
-            dialog.button_create.setText("Oppdater")
+            dialog.button_ok.setText("Oppdater")
             dialog.button_cancel.show()
 
             dialog_code = dialog.exec_()
@@ -508,7 +508,7 @@ class PredefinedCodesTable(QTableWidget):
             self.setItem(i, 0, item_code)
 
 
-class PredefinedCodesSettings(QDialog):
+class PredefinedCodesSettings(AcceptRejectDialog):
     """Dialog for setup and adjustment of PredefinedCodesModule.
 
     Parameters
@@ -569,11 +569,8 @@ class PredefinedCodesSettings(QDialog):
             item.setFlags(item.flags() ^ Qt.ItemIsEditable)
             self.list_category_order.insertItem(i, item)
 
-        # Buttons for accept and reject
-        self.button_create = QPushButton("Opprett")
-        self.button_create.clicked.connect(self.accept)
-        self.button_cancel = QPushButton("Avbryt")
-        self.button_cancel.clicked.connect(self.reject)
+        self.button_ok.setText("Opprett")
+
         # Hide cancel-button, it is only used when modifying an existing
         # PredefinedCodesModule
         self.button_cancel.hide()
@@ -597,14 +594,8 @@ class PredefinedCodesSettings(QDialog):
             self.label_category_order, self.list_category_order
         )
 
-        # Layout for buttons
-        self.button_layout = QHBoxLayout()
-        self.button_layout.addWidget(self.button_create)
-        self.button_layout.addWidget(self.button_cancel)
-
         # Main layout
         self.main_layout = QVBoxLayout()
         self.main_layout.addLayout(self.form_layout)
-        self.main_layout.addLayout(self.button_layout)
 
-        self.setLayout(self.main_layout)
+        self.layout_content.addLayout(self.main_layout)