diff --git a/idb/postgres/postgres.go b/idb/postgres/postgres.go
index 9e4b96597..b9ae15af5 100644
--- a/idb/postgres/postgres.go
+++ b/idb/postgres/postgres.go
@@ -663,7 +663,7 @@ func buildTransactionQuery(tf idb.TransactionFilter) (query string, whereArgs []
 	}
 
 	// If returnInnerTxnOnly flag is false, then return the root transaction
-	if !tf.ReturnInnerTxnOnly && !tf.ReturnRootTxnsOnly {
+	if !(tf.ReturnInnerTxnOnly || tf.ReturnRootTxnsOnly) {
 		query = "SELECT t.round, t.intra, t.txn, root.txn, t.extra, t.asset, h.realtime FROM txn t JOIN block_header h ON t.round = h.round"
 	} else {
 		query = "SELECT t.round, t.intra, t.txn, NULL, t.extra, t.asset, h.realtime FROM txn t JOIN block_header h ON t.round = h.round"
@@ -674,7 +674,7 @@ func buildTransactionQuery(tf idb.TransactionFilter) (query string, whereArgs []
 	}
 
 	// join in the root transaction if the returnInnerTxnOnly flag is false
-	if !tf.ReturnInnerTxnOnly || !tf.ReturnRootTxnsOnly {
+	if !(tf.ReturnInnerTxnOnly || tf.ReturnRootTxnsOnly) {
 		query += " LEFT OUTER JOIN txn root ON t.round = root.round AND (t.extra->>'root-intra')::int = root.intra"
 	}