diff --git a/homeassistant/components/fritz/common.py b/homeassistant/components/fritz/common.py
index 81fdcde236a..cdea8ebee54 100644
--- a/homeassistant/components/fritz/common.py
+++ b/homeassistant/components/fritz/common.py
@@ -6,6 +6,7 @@ from dataclasses import dataclass, field
 from datetime import datetime, timedelta
 from functools import partial
 import logging
+import re
 from types import MappingProxyType
 from typing import Any, TypedDict, cast
 
@@ -259,7 +260,12 @@ class FritzBoxTools(
             self._unique_id = info.serial_number
 
         self._model = info.model_name
-        self._current_firmware = info.software_version
+        if (
+            version_normalized := re.search(r"^\d+\.[0]?(.*)", info.software_version)
+        ) is not None:
+            self._current_firmware = version_normalized.group(1)
+        else:
+            self._current_firmware = info.software_version
 
         (
             self._update_available,
diff --git a/tests/components/fritz/const.py b/tests/components/fritz/const.py
index c19327fbf5e..dc27e8aab96 100644
--- a/tests/components/fritz/const.py
+++ b/tests/components/fritz/const.py
@@ -29,7 +29,7 @@ MOCK_HOST = "fake_host"
 MOCK_IPS = {"fritz.box": "192.168.178.1", "printer": "192.168.178.2"}
 MOCK_MODELNAME = "FRITZ!Box 7530 AX"
 MOCK_FIRMWARE = "256.07.29"
-MOCK_FIRMWARE_AVAILABLE = "256.07.50"
+MOCK_FIRMWARE_AVAILABLE = "7.50"
 MOCK_FIRMWARE_RELEASE_URL = (
     "http://download.avm.de/fritzbox/fritzbox-7530-ax/deutschland/fritz.os/info_de.txt"
 )
diff --git a/tests/components/fritz/test_diagnostics.py b/tests/components/fritz/test_diagnostics.py
index f7e5980720d..760b5f32d0c 100644
--- a/tests/components/fritz/test_diagnostics.py
+++ b/tests/components/fritz/test_diagnostics.py
@@ -50,7 +50,7 @@ async def test_entry_diagnostics(
                 for _, device in avm_wrapper.devices.items()
             ],
             "connection_type": "WANPPPConnection",
-            "current_firmware": "256.07.29",
+            "current_firmware": "7.29",
             "discovered_services": [
                 "DeviceInfo1",
                 "Hosts1",
diff --git a/tests/components/fritz/test_update.py b/tests/components/fritz/test_update.py
index 915a6bb6fd0..99ca7a3b6c5 100644
--- a/tests/components/fritz/test_update.py
+++ b/tests/components/fritz/test_update.py
@@ -9,7 +9,6 @@ from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 from .const import (
-    MOCK_FIRMWARE,
     MOCK_FIRMWARE_AVAILABLE,
     MOCK_FIRMWARE_RELEASE_URL,
     MOCK_USER_DATA,
@@ -60,7 +59,7 @@ async def test_update_available(
         update = hass.states.get("update.mock_title_fritz_os")
         assert update is not None
         assert update.state == "on"
-        assert update.attributes.get("installed_version") == MOCK_FIRMWARE
+        assert update.attributes.get("installed_version") == "7.29"
         assert update.attributes.get("latest_version") == MOCK_FIRMWARE_AVAILABLE
         assert update.attributes.get("release_url") == MOCK_FIRMWARE_RELEASE_URL
 
@@ -83,8 +82,8 @@ async def test_no_update_available(
     update = hass.states.get("update.mock_title_fritz_os")
     assert update is not None
     assert update.state == "off"
-    assert update.attributes.get("installed_version") == MOCK_FIRMWARE
-    assert update.attributes.get("latest_version") == MOCK_FIRMWARE
+    assert update.attributes.get("installed_version") == "7.29"
+    assert update.attributes.get("latest_version") == "7.29"
 
 
 async def test_available_update_can_be_installed(