diff --git a/src/data/hours/prime.yml b/src/data/hours/prime.yml
index 8ecc362..e9fc2bf 100644
--- a/src/data/hours/prime.yml
+++ b/src/data/hours/prime.yml
@@ -30,6 +30,18 @@
 # ferial Preces are said on *every* ferial day, not just Advent/Lent/
 # vigils/Ember days the way later rubrics restricted them.
 #
+# Preces deliberately use the *secular* Tridentine form
+# (propers/common/prime-preces-dominicales.yml), not Monastic Prime's own
+# shorter Dominicales form — chosen because the secular form keeps content
+# (the "Et ego ad te, Domine, clamavi..." versicle block; the fuller
+# "Miserere nostri, Domine... Fiat misericordia tua..." close) that
+# Monastic Prime drops. Under the live-verified secular Tridentine rubric
+# this same unified form is actually said on *every* day Preces are said
+# (Sunday and ferial alike, since Pius X's reform) — prime-preces-
+# feriales.yml's separate (older, pre-reform) ferial-only text is kept
+# wired up here anyway, by explicit choice, pending a future fix to gate
+# it to the narrower set of days it should actually apply to.
+#
 # The dead-commemoration psalm (129, De profundis) is dropped by explicit
 # choice — a deliberate time-saving cut, not an oversight. The intro/close
 # responsory and collect around it are kept.
diff --git a/src/data/propers/common/prime-preces-dominicales.yml b/src/data/propers/common/prime-preces-dominicales.yml
index c05e87a..b12a7ed 100644
--- a/src/data/propers/common/prime-preces-dominicales.yml
+++ b/src/data/propers/common/prime-preces-dominicales.yml
@@ -1,9 +1,18 @@
-# Verified against Divinum Officium (Monastic Tridentinum 1617), 2026-08-25
-# run — used on Sundays and feast days (see calendar/isSundayOrFeast); plain
-# ferial days use prime-preces-feriales.yml instead. Real Prime also drops
-# Preces entirely above a certain feast rank — that suppression isn't wired
-# up yet (needs milestone 4's feast-rank data), so today Preces are always
-# shown, just choosing between these two forms.
+# Secular Tridentine form (verified against Divinum Officium, version
+# "Tridentine - 1906", 2026-08-25 run) — used on Sundays and feast days
+# (see calendar/isSundayOrFeast); plain ferial days use
+# prime-preces-feriales.yml's older form instead (see that file's header
+# and hours/prime.yml's for the current, imperfect day-split rule).
+#
+# Chosen over Monastic Prime's own (shorter) Dominicales form by explicit
+# preference: this keeps the "Et ego ad te, Domine, clamavi..." versicle
+# block and the fuller "Miserere nostri, Domine... Fiat misericordia
+# tua..." close that Monastic Prime drops.
+#
+# The Confiteor keeps "beato Patri nostro Benedicto" in the saint list —
+# real secular/Roman Confiteors omit this (it's a Monastic-only addition
+# naming St. Benedict), but vu keeps it by explicit choice regardless of
+# which Preces form is otherwise in use.
 id: prime-preces-dominicales
 text:
   la: |
@@ -17,6 +26,19 @@ text:
     V. Carnis resurrectiónem.
     R. Vitam ætérnam. Amen.
 
+    V. Et ego ad te, Dómine, clamávi.
+    R. Et mane orátio mea prævéniet te.
+    V. Repleátur os meum laude.
+    R. Ut cantem glóriam tuam, tota die magnitúdinem tuam.
+    V. Dómine, avérte fáciem tuam a peccátis meis.
+    R. Et omnes iniquitátes meas dele.
+    V. Cor mundum crea in me, Deus.
+    R. Et spíritum rectum ínnova in viscéribus meis.
+    V. Ne projícias me a fácie tua.
+    R. Et spíritum sanctum tuum ne áuferas a me.
+    V. Redde mihi lætítiam salutáris tui.
+    R. Et spíritu principáli confírma me.
+
     V. Adjutórium nostrum ✠ in nómine Dómini.
     R. Qui fecit cælum et terram.
 
@@ -28,6 +50,10 @@ text:
 
     V. Dignáre, Dómine, die isto.
     R. Sine peccáto nos custodíre.
+    V. Miserére nostri, Dómine.
+    R. Miserére nostri.
+    V. Fiat misericórdia tua, Dómine, super nos.
+    R. Quemádmodum sperávimus in te.
     V. Dómine, exáudi oratiónem meam.
     R. Et clamor meus ad te véniat.
   en: |
@@ -41,6 +67,19 @@ text:
     V. The resurrection of the body.
     R. And life everlasting. Amen.
 
+    V. But I, O Lord, have cried unto thee:
+    R. And in the morning my prayer shall rise to thee.
+    V. Let my mouth be filled with praise,
+    R. That I may sing thy glory and thy greatness all the day long.
+    V. O Lord, turn away thy face from my sins,
+    R. And blot out all my iniquities.
+    V. Create a clean heart in me, O God,
+    R. And renew a right spirit within me.
+    V. Cast me not away from thy presence,
+    R. And take not thy Holy Spirit from me.
+    V. Restore unto me the joy of thy salvation,
+    R. And strengthen me with a perfect spirit.
+
     V. Our help is ✠ in the name of the Lord,
     R. Who made heaven and earth.
 
@@ -52,6 +91,10 @@ text:
 
     V. Vouchsafe, O Lord,
     R. To keep us this day without sin.
+    V. O Lord, have mercy upon us.
+    R. Have mercy upon us.
+    V. O Lord, let thy mercy lighten upon us,
+    R. As our trust is in thee.
     V. O Lord, hear my prayer.
     R. And let my cry come unto thee.
 status:
diff --git a/src/data/propers/common/prime-preces-feriales.yml b/src/data/propers/common/prime-preces-feriales.yml
index 38a6919..98b8c32 100644
--- a/src/data/propers/common/prime-preces-feriales.yml
+++ b/src/data/propers/common/prime-preces-feriales.yml
@@ -1,10 +1,13 @@
 # Verified against Divinum Officium ("Psalterium/Special/Preces.txt",
-# [Preces feriales Prima] section) — the same content is used regardless of
-# rubric (Monastic or Roman), unlike prime-preces.yml's Dominicales form
-# which the Monastic rubric shortens (skips straight to the Confiteor
-# cluster). Used on plain ferial days (see calendar/isSundayOrFeast) — by
-# explicit choice, every ferial day, not just Advent/Lent/vigils/Ember days
-# the way later rubrics restricted it.
+# [Preces feriales Prima] section) — the older, pre-1911-reform ferial-only
+# Preces form. Used on plain ferial days (see calendar/isSundayOrFeast) —
+# by explicit choice, currently *every* ferial day, not just the
+# Advent/Lent/vigils/Ember days later rubrics actually restricted it to;
+# under the live-verified secular Tridentine rubric this text doesn't
+# appear on an ordinary ferial day at all (that gets
+# prime-preces-dominicales.yml's unified form instead, same as Sunday) —
+# see hours/prime.yml's header. Narrowing when this file's text actually
+# applies is a known future fix, not done yet.
 id: prime-preces-feriales
 text:
   la: |
diff --git a/tests/hours/prime.test.ts b/tests/hours/prime.test.ts
index f7e83b9..75f9b28 100644
--- a/tests/hours/prime.test.ts
+++ b/tests/hours/prime.test.ts
@@ -113,7 +113,7 @@ describe('resolveOrdo("prime", ...)', () => {
     expect(ferialPreces).toBeDefined();
   });
 
-  it('uses the Sunday capitulum and Preces on a Sunday', () => {
+  it('uses the Sunday capitulum and the secular Preces (with Benedict kept in the Confiteor) on a Sunday', () => {
     const ordo = resolveOrdo('prime', SUNDAY);
     const chapter = ordo.parts.find((p) => p.kind === 'chapter');
     expect(chapter && chapter.kind === 'chapter' ? chapter.text.text.en : undefined).toBe(
@@ -122,6 +122,12 @@ describe('resolveOrdo("prime", ...)', () => {
     const preces = ordo.parts.filter((p) => p.kind === 'preces');
     const dominicalPreces = preces.find((p) => p.kind === 'preces' && p.text.text.la?.includes('Confíteor Deo'));
     expect(dominicalPreces).toBeDefined();
+    expect(
+      dominicalPreces && dominicalPreces.kind === 'preces' ? dominicalPreces.text.text.la : undefined,
+    ).toContain('beáto Patri nostro Benedícto');
+    expect(
+      dominicalPreces && dominicalPreces.kind === 'preces' ? dominicalPreces.text.text.la : undefined,
+    ).toContain('Et ego ad te, Dómine, clamávi');
   });
 
   it('gives the capitulum its scripture citation', () => {