diff --git a/MonoTouch.Dialog/Reflect.cs b/MonoTouch.Dialog/Reflect.cs
index b3c8cf5..df6609a 100644
--- a/MonoTouch.Dialog/Reflect.cs
+++ b/MonoTouch.Dialog/Reflect.cs
@@ -123,6 +123,7 @@ public RangeAttribute (float low, float high)
 		public bool ShowCaption;
 	}
 
+#if !ONLY_TRIMMER_SAFE
 	public class BindingContext : IDisposable {
 		public RootElement Root;
 		Dictionary<Element,MemberAndInstance> mappings;
@@ -467,4 +468,5 @@ public void Fetch ()
 			}
 		}
 	}
+#endif // !ONLY_TRIMMER_SAFE
 }
diff --git a/MonoTouch.Dialog/dotnet/shared.csproj b/MonoTouch.Dialog/dotnet/shared.csproj
index 9d4a0ca..52ced06 100644
--- a/MonoTouch.Dialog/dotnet/shared.csproj
+++ b/MonoTouch.Dialog/dotnet/shared.csproj
@@ -12,6 +12,9 @@
 
     <!-- warning CA1422: This call site is reachable on: '...' obsoleted on: '...': MonoTouch.Dialog isn't really maintained, so we're not removing usage of obsoleted APIs unless we really have to, so just ignore any such warnings -->
     <NoWarn>$(NoWarn);CA1422</NoWarn>
+
+    <!-- Exclude code that's not trimmer-safe -->
+    <DefineConstants>$(DefineConstants);ONLY_TRIMMER_SAFE</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="$(RootDirectory)Elements.cs" />