diff --git a/source/Windows.Devices.Gpio/GpioPin.cs b/source/Windows.Devices.Gpio/GpioPin.cs
index bc558e0..8d8dca0 100644
--- a/source/Windows.Devices.Gpio/GpioPin.cs
+++ b/source/Windows.Devices.Gpio/GpioPin.cs
@@ -41,8 +41,15 @@ public sealed class Gpio​Pin : IGpioPin, IDisposable
         {
             _pinNumber = pinNumber;
 
-            s_eventListener = new GpioPinEventListener();
             _syncLock = new object();
+
+            lock (_syncLock)
+            {
+                if (s_eventListener == null)
+                {
+                    s_eventListener = new GpioPinEventListener();
+                }
+            }
         }
 
         internal bool Init()