diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9af979e0a5..616288e5fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,8 @@ for most certificates. Notably, it will now work out of the box for Realm Cloud
 
 ### Bug fixes
 - When constructing queries that compare an invalid/unmanaged RealmObject (e.g. `realm.All<Foo>().Where(f => f.Bar == someBar)`),
-a meaningful exception will now be thrown rather than an obscure ArgumentNullException.
+a meaningful exception will now be thrown rather than an obscure ArgumentNullException. 
+- Added `ShouldCompactOnLaunch` to the PCL version of the library. ([dotnet-private#125](https://github.com/realm/realm-dotnet-private/issues/125))
 
 ### Breaking Changes
 
diff --git a/Platform.PCL/Realm.PCL/RealmConfigurationPCL.cs b/Platform.PCL/Realm.PCL/RealmConfigurationPCL.cs
index 0160f33b53..f6acd6f198 100644
--- a/Platform.PCL/Realm.PCL/RealmConfigurationPCL.cs
+++ b/Platform.PCL/Realm.PCL/RealmConfigurationPCL.cs
@@ -80,6 +80,15 @@ public class RealmConfiguration : RealmConfigurationBase
         /// </value>
         public MigrationCallbackDelegate MigrationCallback { get; set; }
 
+        /// <summary>
+        /// Gets or sets the compact on launch callback.
+        /// </summary>
+        /// <value>
+        /// The <see cref="ShouldCompactDelegate"/> that will be invoked when opening a Realm for the first time
+        /// to determine if it should be compacted before being returned to the user.
+        /// </value>
+        public ShouldCompactDelegate ShouldCompactOnLaunch { get; set; }
+        
         /// <summary>
         /// Gets or sets the <see cref="RealmConfigurationBase"/> that is used when creating a new <see cref="Realm"/> without specifying a configuration.
         /// </summary>