diff --git a/src/20database.js b/src/20database.js
index 8bc3bef7a8..c295744c1d 100755
--- a/src/20database.js
+++ b/src/20database.js
@@ -68,7 +68,6 @@ Database.prototype.resetSqlCache = function () {
 	this.sqlCache = {}; // Cache for compiled SQL statements
 	this.sqlCacheSize = 0;
 	this.astCache = {}; // Cache for AST objects
-	this.setCache = {}; // Cache for WHERE (NOT) IN statements
 };
 
 // Main SQL function