diff --git a/lib/config/pool-options.js b/lib/config/pool-options.js
index a45166d8..61c67607 100644
--- a/lib/config/pool-options.js
+++ b/lib/config/pool-options.js
@@ -22,7 +22,7 @@ class PoolOptions {
 
     this.acquireTimeout = opts.acquireTimeout === undefined ? 10000 : opts.acquireTimeout;
     this.connectionLimit = opts.connectionLimit === undefined ? 10 : opts.connectionLimit;
-    this.idleTimeout = opts.idleTimeout || 1800;
+    this.idleTimeout = opts.idleTimeout === undefined ? 1800 : opts.idleTimeout;
     this.leakDetectionTimeout = opts.leakDetectionTimeout || 0;
     this.initializationTimeout = opts.initializationTimeout === undefined ? 30000 : opts.initializationTimeout;
     this.minDelayValidation = opts.minDelayValidation === undefined ? 500 : opts.minDelayValidation;