diff --git a/core/stores/sqlx/tx.go b/core/stores/sqlx/tx.go
index 2fb71f88..97991569 100644
--- a/core/stores/sqlx/tx.go
+++ b/core/stores/sqlx/tx.go
@@ -30,7 +30,8 @@ func (t txSession) Prepare(q string) (StmtSession, error) {
 	}
 
 	return statement{
-		stmt: stmt,
+		query: q,
+		stmt:  stmt,
 	}, nil
 }