diff --git a/python/nav/alertengine/base.py b/python/nav/alertengine/base.py
index 1698ed2744..8a678e764f 100644
--- a/python/nav/alertengine/base.py
+++ b/python/nav/alertengine/base.py
@@ -22,10 +22,10 @@
 import gc
 import logging
 from datetime import datetime, timedelta
+from functools import lru_cache
 
 from django.db import transaction, reset_queries
 
-from nav.compatibility import lru_cache
 from nav.models.profiles import (
     Account,
     AccountAlertQueue,
diff --git a/python/nav/compatibility.py b/python/nav/compatibility.py
deleted file mode 100644
index 07ca52d024..0000000000
--- a/python/nav/compatibility.py
+++ /dev/null
@@ -1,9 +0,0 @@
-# lru_cache isn't used that much but one application of sed is faster
-# than changing a block into a line three times.
-
-# When no longer supporting 2.2:
-# s/nav.compatibility import lru_cache/functools import lru_cache/
-try:
-    from functools import lru_cache
-except ImportError:
-    from django.utils.lru_cache import lru_cache
diff --git a/python/nav/metrics/lookup.py b/python/nav/metrics/lookup.py
index 79b1f15c3c..8d1b87ba38 100644
--- a/python/nav/metrics/lookup.py
+++ b/python/nav/metrics/lookup.py
@@ -16,9 +16,9 @@
 #
 """Functions for reverse-mapping metric names to NAV objects"""
 
+from functools import lru_cache
 import re
 
-from nav.compatibility import lru_cache
 from nav.models.manage import Netbox, Interface, Prefix, Sensor
 
 
diff --git a/python/nav/web/ipdevinfo/host_information.py b/python/nav/web/ipdevinfo/host_information.py
index fd7a685879..c60b27dd39 100644
--- a/python/nav/web/ipdevinfo/host_information.py
+++ b/python/nav/web/ipdevinfo/host_information.py
@@ -15,10 +15,10 @@
 #
 """Provides a function for getting host information"""
 
+from functools import lru_cache
 
 import IPy
 from nav import asyncdns
-from nav.compatibility import lru_cache
 
 from nav.util import is_valid_ip