diff --git a/78gnds8jrj.js b/78gnds8jrj.js
index 9cb27d1..436c702 100644
--- a/78gnds8jrj.js
+++ b/78gnds8jrj.js
@@ -151,6 +151,16 @@ GameLib.CustomCode.prototype.adjustSpeed = function(delta) {
 
 	if (this.speedUp) {
 		this.speed += delta;
+	} else {
+		this.speed -= delta;
+	}
+	
+	if (this.speed < 0) {
+		this.speed = 0;
+	}
+	
+	if (this.speed > 50) {
+		this.speed = 50;
 	}
 	
 }.bind(this);