diff --git a/core/metadata_service.py b/core/metadata_service.py
index 5becc9ee..7ed4257d 100644
--- a/core/metadata_service.py
+++ b/core/metadata_service.py
@@ -17,6 +17,9 @@ logger = get_logger("metadata_service")
 
 MetadataProvider = Literal["spotify", "itunes", "auto"]
 
+# Ordered by fallback preference. Higher-priority sources appear earlier.
+METADATA_SOURCE_PRIORITY = ('deezer', 'itunes', 'spotify', 'discogs', 'hydrabase')
+
 _client_cache_lock = threading.RLock()
 _client_cache: Dict[str, Any] = {}
 
@@ -65,6 +68,20 @@ def get_primary_client():
     return get_client_for_source(get_primary_source())
 
 
+def get_source_priority(preferred_source: str):
+    """Return supported sources with the preferred source first."""
+    ordered = []
+
+    if preferred_source in METADATA_SOURCE_PRIORITY:
+        ordered.append(preferred_source)
+
+    for source in METADATA_SOURCE_PRIORITY:
+        if source not in ordered:
+            ordered.append(source)
+
+    return ordered
+
+
 def get_client_for_source(source: str):
     """Get the client object for an exact metadata source.
 
diff --git a/core/repair_jobs/album_completeness.py b/core/repair_jobs/album_completeness.py
index 6c6dc8e2..999597dd 100644
--- a/core/repair_jobs/album_completeness.py
+++ b/core/repair_jobs/album_completeness.py
@@ -3,6 +3,7 @@
 from core.metadata_service import (
     get_album_tracks_for_source,
     get_primary_source,
+    get_source_priority,
 )
 from core.repair_jobs import register_job
 from core.repair_jobs.base import JobContext, JobResult, RepairJob
@@ -252,7 +253,7 @@ class AlbumCompletenessJob(RepairJob):
 
     def _get_expected_total(self, context, primary_source, album_ids):
         """Try to get the expected track count from the active metadata provider first."""
-        for source in self._iter_source_priority(primary_source):
+        for source in get_source_priority(primary_source):
             album_id = self._get_album_id_for_source(source, album_ids)
             if not album_id:
                 continue
@@ -284,7 +285,7 @@ class AlbumCompletenessJob(RepairJob):
                 conn.close()
 
         api_tracks = None
-        for source in self._iter_source_priority(primary_source):
+        for source in get_source_priority(primary_source):
             source_album_id = self._get_album_id_for_source(source, album_ids)
             if not source_album_id:
                 continue
@@ -336,29 +337,12 @@ class AlbumCompletenessJob(RepairJob):
         except Exception:
             return 'deezer'
 
-    def _iter_source_priority(self, primary_source: str):
-        """Yield supported sources in priority order."""
-        supported = ('spotify', 'itunes', 'deezer', 'discogs', 'hydrabase')
-        ordered = []
-
-        if primary_source in supported:
-            ordered.append(primary_source)
-
-        for source in supported:
-            if source not in ordered:
-                ordered.append(source)
-
-        return ordered
-
     def _get_album_id_for_source(self, source: str, album_ids: dict) -> str:
         return album_ids.get(source, '')
 
     def _get_album_tracks(self, source: str, album_id: str):
         """Fetch album tracks from a specific source."""
         try:
-            if source not in ('spotify', 'itunes', 'deezer', 'discogs', 'hydrabase'):
-                return None
-
             return get_album_tracks_for_source(source, album_id)
         except Exception as e:
             logger.debug("Error getting %s album tracks for %s: %s", source.capitalize(), album_id, e)
diff --git a/core/repair_worker.py b/core/repair_worker.py
index e556eadf..91656ae5 100644
--- a/core/repair_worker.py
+++ b/core/repair_worker.py
@@ -18,7 +18,11 @@ from difflib import SequenceMatcher
 from datetime import datetime, timedelta
 from typing import Any, Dict, List, Optional, Tuple
 
-from core.metadata_service import get_album_tracks_for_source, get_primary_source
+from core.metadata_service import (
+    get_album_tracks_for_source,
+    get_source_priority,
+    get_primary_source,
+)
 from core.repair_jobs import get_all_jobs
 from core.repair_jobs.base import JobContext, JobResult, RepairJob
 from utils.logging_config import get_logger
@@ -1930,17 +1934,7 @@ class RepairWorker:
             'hydrabase': hydrabase_album_id,
         }
 
-        def _source_priority(source_name: str):
-            supported = ('spotify', 'itunes', 'deezer', 'discogs', 'hydrabase')
-            ordered = []
-            if source_name in supported:
-                ordered.append(source_name)
-            for source in supported:
-                if source not in ordered:
-                    ordered.append(source)
-            return ordered
-
-        for source in _source_priority(primary_source):
+        for source in get_source_priority(primary_source):
             fid = album_sources.get(source, '')
             if not fid:
                 continue