diff --git a/SpriteKit-Spring.podspec b/SpriteKit-Spring.podspec
index 587acb3..36d29fe 100644
--- a/SpriteKit-Spring.podspec
+++ b/SpriteKit-Spring.podspec
@@ -9,7 +9,7 @@
 
 Pod::Spec.new do |s|
   s.name             = "SpriteKit-Spring"
-  s.version          = "1.0.1"
+  s.version          = "1.1.0"
   s.summary          = "SpriteKit API reproducing UIView's spring animations with SKAction"
   s.homepage         = "https://github.com/ataugeron/SpriteKit-Spring"
   s.screenshots     = "https://ataugeron.github.io/SpriteKit-Spring/bounce_1.gif", "https://ataugeron.github.io/SpriteKit-Spring/bounce_2.gif", "https://ataugeron.github.io/SpriteKit-Spring/bounce_3.gif"
diff --git a/SpriteKit-Spring.swift b/SpriteKit-Spring.swift
index 8c55c1c..a399242 100644
--- a/SpriteKit-Spring.swift
+++ b/SpriteKit-Spring.swift
@@ -244,7 +244,7 @@ public extension SKAction {
             if initialValue == nil {
 
                 initialValue = node.value(forKeyPath: keyPath) as! CGFloat
-                initialDistance = initialDistance ?? finalValue - initialValue!
+                initialDistance = initialDistance != nil ? initialDistance * initialValue - initialValue : finalValue - initialValue!
                 finalValue = finalValue ?? initialValue! + initialDistance
 
                 var magicNumber: CGFloat! // picked manually to visually match the behavior of UIKit