diff --git a/plugins/tiddlywiki/multiwikiserver/modules/sql-tiddler-database.js b/plugins/tiddlywiki/multiwikiserver/modules/sql-tiddler-database.js
index 6f3dacaba..5bc48e7a8 100644
--- a/plugins/tiddlywiki/multiwikiserver/modules/sql-tiddler-database.js
+++ b/plugins/tiddlywiki/multiwikiserver/modules/sql-tiddler-database.js
@@ -48,7 +48,9 @@ function SqlTiddlerDatabase(options) {
 
 SqlTiddlerDatabase.prototype.close = function() {
 	for(const sql in this.statements) {
-		this.statements[sql].finalize();
+		if(this.statements[sql].finalize) {
+			this.statements[sql].finalize();
+		}	
 	}
 	this.statements = Object.create(null);
 	this.db.close();