diff --git a/emulators/xenios.yml b/emulators/xenios.yml
index cc9440da6..c2eecbb0a 100644
--- a/emulators/xenios.yml
+++ b/emulators/xenios.yml
@@ -3,6 +3,7 @@ type: standalone
 core_classification: community_fork
 source: "https://github.com/xenios-jp/XeniOS"
 upstream: "https://github.com/has207/xenia-edge"
+source_branch: preview
 source_commit: "87b176a078c316fde3adf67a217f0c44615b0e0d"
 upstream_commit: "07021f019cf55105bc26c0474e0b0835808353e2"
 profiled_date: "2026-08-23"
@@ -22,7 +23,7 @@ mode: standalone
 
 notes: |
   Apple-focused fork of Xenia, based on Xenia Edge at their merge base
-  07021f0 (upstream_commit), published from the xenios branch as
+  07021f0 (upstream_commit), published from the preview branch as
   xenios_macos_apple_silicon.dmg, xenios_macos_intel.dmg,
   xenios_macos_universal.dmg and xenios_ios_iphone_ipad.ipa. The macOS build
   names its bundle and executable Xenia-edge, the iOS build XeniOS
diff --git a/tests/test_audit_regressions.py b/tests/test_audit_regressions.py
index a2fa111f3..feef8945d 100644
--- a/tests/test_audit_regressions.py
+++ b/tests/test_audit_regressions.py
@@ -5788,6 +5788,18 @@ class NoProfileHashFromASecondarySource(unittest.TestCase):
         self.assertEqual(found, [])
 
 
+class XeniosFollowsThePreviewBranch(unittest.TestCase):
+    """The xenios pin 87b176a0 and tag v2.0.1 are ancestors of `preview`
+    (compare: ahead 129, behind 0) and diverged from the default `xenios`
+    branch (ahead 1784, behind 24). Without source_branch, profile_sync read
+    the pin as orphaned and 19 refs as moved by the branch divergence."""
+
+    def test_the_profile_names_the_branch_its_pin_is_on(self):
+        profile = yaml.safe_load((ROOT / "emulators" / "xenios.yml").read_text(encoding="utf-8"))
+        self.assertEqual(profile.get("source_branch"), "preview")
+        self.assertNotIn("from the xenios branch", profile.get("notes", ""))
+
+
 class AHashScanLabelNamesNoOtherDump(unittest.TestCase):
     """A core that finds its firmware by content names no file, so each
     entry name is a label. ares labelled its Famicom Disk System revision