diff --git a/TGPControls/TGPControlsTicksProtocol.swift b/TGPControls/TGPControlsTicksProtocol.swift
index 6805ef7..606b5ba 100644
--- a/TGPControls/TGPControlsTicksProtocol.swift
+++ b/TGPControls/TGPControlsTicksProtocol.swift
@@ -29,7 +29,7 @@
 
 import Foundation
 
-public protocol TGPControlsTicksProtocol
+@objc public protocol TGPControlsTicksProtocol
 {
     func tgpTicksDistanceChanged(ticksDistance:CGFloat, sender:AnyObject)
     func tgpValueChanged(value:UInt)
diff --git a/TGPControls/TGPDiscreteSlider.swift b/TGPControls/TGPDiscreteSlider.swift
index 71b987b..4606cc9 100644
--- a/TGPControls/TGPDiscreteSlider.swift
+++ b/TGPControls/TGPDiscreteSlider.swift
@@ -235,7 +235,7 @@ public class TGPDiscreteSlider:TGPSlider_INTERFACE_BUILDER {
         set {}
     }
 
-    public var ticksListener:TGPControlsTicksProtocol? = nil {
+    @objc public var ticksListener:TGPControlsTicksProtocol? = nil {
         didSet {
             ticksListener?.tgpTicksDistanceChanged(ticksDistance: ticksDistance,
                                                    sender: self)