diff --git a/080g209iov.js b/080g209iov.js
index 4ffcc33..b6bcec0 100644
--- a/080g209iov.js
+++ b/080g209iov.js
@@ -72,8 +72,14 @@ if (GameLib.Utils.UndefinedOrNull(this.initialized)) {
     //this.nextSpawnTime = this.getNextSpawnTime();
 
 	this.setLevelProperties = function() {
+		
+		this.prevLevel = this.level;
+		
 		this.level = Math.floor(this.enemiesSpawned / 10) + 1;
-		this.spawnInterval -= 1 / (this.level);
+		
+		if (this.prevLevel !== this.level) {	
+			this.spawnInterval -= 1 / (this.level);
+		}
 	}
 	
     this.spawnEnemy = function() {