diff --git a/backend/app.js b/backend/app.js
index 92c3234..61f2603 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -163,7 +163,7 @@ var blockInterval = setInterval( function() {
 					exptime = txData.blocktime + 24*3600;
 				} else if (txData.amount >= 0.025 && txData.amount < 0.1) {
 					exptime = txData.blocktime + 7*24*3600;
-				} else if (txData.mount >= 0.1) {
+				} else if (txData.amount >= 0.1) {
 					exptime = txData.blocktime + 4*7*24*3600;
 				}