diff --git a/homeassistant/components/backup/config.py b/homeassistant/components/backup/config.py
index 927d826aee5..da5a6b5e1de 100644
--- a/homeassistant/components/backup/config.py
+++ b/homeassistant/components/backup/config.py
@@ -283,7 +283,7 @@ class ScheduleState(StrEnum):
 
     NEVER = "never"
     DAILY = "daily"
-    CUSTOM = "custom"
+    CUSTOM_DAYS = "custom_days"
     MONDAY = "mon"
     TUESDAY = "tue"
     WEDNESDAY = "wed"
@@ -313,7 +313,7 @@ class BackupSchedule:
         There are only three possible state types: never, daily, or weekly.
         """
         if self.state is ScheduleState.NEVER or (
-            self.state is ScheduleState.CUSTOM and not self.days
+            self.state is ScheduleState.CUSTOM_DAYS and not self.days
         ):
             self._unschedule_next(manager)
             return
@@ -324,7 +324,7 @@ class BackupSchedule:
                 CRON_PATTERN_DAILY.format(m=time.minute, h=time.hour),
                 manager,
             )
-        elif self.state is ScheduleState.CUSTOM:
+        elif self.state is ScheduleState.CUSTOM_DAYS:
             self._schedule_next(
                 CRON_PATTERN_WEEKLY.format(
                     m=time.minute,
diff --git a/tests/components/backup/snapshots/test_websocket.ambr b/tests/components/backup/snapshots/test_websocket.ambr
index e065e543fa8..1de6415c38a 100644
--- a/tests/components/backup/snapshots/test_websocket.ambr
+++ b/tests/components/backup/snapshots/test_websocket.ambr
@@ -468,7 +468,7 @@
             'mon',
             'sun',
           ]),
-          'state': 'custom',
+          'state': 'custom_days',
           'time': None,
         }),
       }),
@@ -1169,7 +1169,7 @@
             'mon',
             'sun',
           ]),
-          'state': 'custom',
+          'state': 'custom_days',
           'time': None,
         }),
       }),
@@ -1206,7 +1206,7 @@
             'mon',
             'sun',
           ]),
-          'state': 'custom',
+          'state': 'custom_days',
           'time': None,
         }),
       }),
diff --git a/tests/components/backup/test_websocket.py b/tests/components/backup/test_websocket.py
index 7d5e88fdc6f..56479caae5e 100644
--- a/tests/components/backup/test_websocket.py
+++ b/tests/components/backup/test_websocket.py
@@ -1051,7 +1051,7 @@ async def test_agents_info(
                         "last_completed_automatic_backup": None,
                         "schedule": {
                             "days": ["mon", "sun"],
-                            "state": "custom",
+                            "state": "custom_days",
                             "time": None,
                         },
                     },
@@ -1113,7 +1113,7 @@ async def test_config_info(
         {
             "type": "backup/config/update",
             "create_backup": {"agent_ids": ["test-agent"]},
-            "schedule": {"days": ["mon", "sun"], "state": "custom"},
+            "schedule": {"days": ["mon", "sun"], "state": "custom_days"},
         },
         {
             "type": "backup/config/update",
@@ -1380,7 +1380,7 @@ async def test_config_update_errors(
                 {
                     "type": "backup/config/update",
                     "create_backup": {"agent_ids": ["test.test-agent"]},
-                    "schedule": {"days": ["wed", "fri"], "state": "custom"},
+                    "schedule": {"days": ["wed", "fri"], "state": "custom_days"},
                 }
             ],
             "2024-11-11T04:45:00+01:00",
@@ -1418,7 +1418,7 @@ async def test_config_update_errors(
                 {
                     "type": "backup/config/update",
                     "create_backup": {"agent_ids": ["test.test-agent"]},
-                    "schedule": {"days": [], "state": "custom"},
+                    "schedule": {"days": [], "state": "custom_days"},
                 }
             ],
             "2024-11-11T04:45:00+01:00",