diff --git a/frontend/delta/js/Clipperz/Crypto/PRNG.js b/frontend/delta/js/Clipperz/Crypto/PRNG.js
index 4a9409f..80d972f 100644
--- a/frontend/delta/js/Clipperz/Crypto/PRNG.js
+++ b/frontend/delta/js/Clipperz/Crypto/PRNG.js
@@ -293,7 +293,7 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
 Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource = function(args) {
 	args = args || {};
 
-	this._intervalTime = args.intervalTime || 500;
+	this._intervalTime = args.intervalTime || 1000;
 	this._browserCrypto = args.browserCrypto;
 	
 	Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);