diff --git a/backend/internal/store/profile_test.go b/backend/internal/store/profile_test.go
index 67eb157..137bc4d 100644
--- a/backend/internal/store/profile_test.go
+++ b/backend/internal/store/profile_test.go
@@ -26,8 +26,8 @@ func TestProfile_DefaultsThenUpdate(t *testing.T) {
 	if p.WarmupMinutes != 10 || p.CooldownMinutes != 5 {
 		t.Errorf("phase-minute defaults = %+v, want warmup=10, cooldown=5", p)
 	}
-	if p.BackfillHorizonDays != 1095 {
-		t.Errorf("BackfillHorizonDays = %d, want 1095 (migration default)", p.BackfillHorizonDays)
+	if p.BackfillHorizonDays != 90 {
+		t.Errorf("BackfillHorizonDays = %d, want 90 (schema default)", p.BackfillHorizonDays)
 	}
 	if p.MinRepresentativePaceSecPerKm != 720 || p.MinRepresentativeTimeSeconds != 3 {
 		t.Errorf("pace artifact filter defaults = %+v, want pace=720, time=3", p)
diff --git a/backend/internal/store/schema.sql b/backend/internal/store/schema.sql
index 3ad9695..1a9272c 100644
--- a/backend/internal/store/schema.sql
+++ b/backend/internal/store/schema.sql
@@ -40,7 +40,7 @@ CREATE TABLE profile (
     -- BackfillHorizonDays bounds how far back "Sync now" reaches when
     -- walking backward from today; read fresh on every sync (not cached at
     -- server startup), so changing it here takes effect on the next click.
-    backfill_horizon_days INTEGER NOT NULL DEFAULT 1095,
+    backfill_horizon_days INTEGER NOT NULL DEFAULT 90,
     max_heart_rate      REAL,
     resting_heart_rate  REAL,
     hr_zone1_min_pct REAL NOT NULL DEFAULT 50,
diff --git a/docs/DATABASE.md b/docs/DATABASE.md
index cbfd0b3..9e41b1a 100644
--- a/docs/DATABASE.md
+++ b/docs/DATABASE.md
@@ -45,7 +45,7 @@ CREATE TABLE profile (
     -- BackfillHorizonDays bounds how far back "Sync now" reaches when
     -- walking backward from today; read fresh on every sync (not cached at
     -- server startup), so changing it here takes effect on the next click.
-    backfill_horizon_days INTEGER NOT NULL DEFAULT 1095,
+    backfill_horizon_days INTEGER NOT NULL DEFAULT 90,
     max_heart_rate      REAL,
     resting_heart_rate  REAL,
     hr_zone1_min_pct REAL NOT NULL DEFAULT 50,