diff --git a/internal/repository/mysql/repository.go b/internal/repository/mysql/repository.go
index 7955f3b..aacbf3a 100644
--- a/internal/repository/mysql/repository.go
+++ b/internal/repository/mysql/repository.go
@@ -7,7 +7,7 @@ import (
 	"fmt"
 	"time"
 
-	_ "github.com/go-sql-driver/mysql"
+	mysql "github.com/go-sql-driver/mysql"
 	"github.com/jmoiron/sqlx"
 	"github.com/shopspring/decimal"
 
@@ -699,9 +699,17 @@ func (r *Repository) insertSystemStateHistory(ctx context.Context, state domain.
 	_, err := r.execer().ExecContext(ctx, `
 INSERT INTO system_state_history (ts, state, mode, halted, halt_reason, context_json)
 VALUES (UTC_TIMESTAMP(3), ?, ?, ?, ?, ?)`, state, mode, halted, nullableString(reason), contextJSON)
+	if isMissingTableError(err) {
+		return nil
+	}
 	return err
 }
 
+func isMissingTableError(err error) bool {
+	var mysqlErr *mysql.MySQLError
+	return errors.As(err, &mysqlErr) && mysqlErr.Number == 1146
+}
+
 func (r *Repository) Unhalt(ctx context.Context, reason string) error {
 	return r.RunInTx(ctx, func(ctx context.Context, repo repository.Repository) error {
 		state, halted, haltReason, err := repo.GetSystemState(ctx)
diff --git a/internal/repository/mysql/rows_test.go b/internal/repository/mysql/rows_test.go
index 7106ec4..630c3eb 100644
--- a/internal/repository/mysql/rows_test.go
+++ b/internal/repository/mysql/rows_test.go
@@ -1,9 +1,12 @@
 package mysql
 
 import (
+	"errors"
+	"fmt"
 	"testing"
 	"time"
 
+	mysql "github.com/go-sql-driver/mysql"
 	"github.com/shopspring/decimal"
 
 	"overnight-trading-bot/internal/domain"
@@ -25,3 +28,15 @@ func TestMinuteCandleRowPreservesTimestamp(t *testing.T) {
 		t.Fatalf("daily timestamp was not truncated to date: %s", daily.TradeDate)
 	}
 }
+
+func TestIsMissingTableError(t *testing.T) {
+	if !isMissingTableError(&mysql.MySQLError{Number: 1146}) {
+		t.Fatal("expected MySQL 1146 to be treated as missing table")
+	}
+	if !isMissingTableError(fmt.Errorf("wrap: %w", &mysql.MySQLError{Number: 1146})) {
+		t.Fatal("expected wrapped MySQL 1146 to be treated as missing table")
+	}
+	if isMissingTableError(errors.New("not mysql")) {
+		t.Fatal("plain errors must not be treated as missing table")
+	}
+}