diff --git a/src/darwin/Framework/CHIP/MTRDevice_Internal.h b/src/darwin/Framework/CHIP/MTRDevice_Internal.h
index 5a826dc..bce5abf 100644
--- a/src/darwin/Framework/CHIP/MTRDevice_Internal.h
+++ b/src/darwin/Framework/CHIP/MTRDevice_Internal.h
@@ -108,20 +108,7 @@
 
 @interface MTRDevice () {
     // Ivars needed to implement shared MTRDevice functionality.
-    //
-    // Unfortunately, we can't use @protected here, because that exports the
-    // symbols (so that subclasses that are not part of the framework can see
-    // them), but TAPI does not see these declarations, because they are in a
-    // project header.
-    //
-    // Using @package means that the symbols do not need to be exported, but
-    // unfortunately gets treated as @public from inside our framework, which
-    // means random other framework code can access these ivars.  Hopefully the
-    // naming with leading '_' will make it clearer that random other code
-    // should not touch these.
-    //
-    // TODO: Figure out some way of doing @protected but still not exporting the symbol.
-@package
+@protected
     // Lock that protects overall device state, including delegate storage.
     os_unfair_lock _lock;
     NSMutableSet<MTRDeviceDelegateInfo *> * _delegates;
diff --git a/src/darwin/Framework/Matter.xcodeproj/project.pbxproj b/src/darwin/Framework/Matter.xcodeproj/project.pbxproj
index 3a59680..efafd27 100644
--- a/src/darwin/Framework/Matter.xcodeproj/project.pbxproj
+++ b/src/darwin/Framework/Matter.xcodeproj/project.pbxproj
@@ -2565,6 +2565,7 @@
 					"-Wl,-unexported_symbol,\"___*\"",
 					"-Wl,-unexported_symbol,\"__Unwind_*\"",
 					"-Wl,-unexported_symbol,\"_unw_*\"",
+					"-Wl,-unexported_symbol,\"_OBJC_IVAR_*\"",
 					"-Wl,-hidden-lCHIP",
 				);
 				"OTHER_LDFLAGS[sdk=macosx*]" = (
@@ -2583,6 +2584,7 @@
 					"-Wl,-unexported_symbol,\"___*\"",
 					"-Wl,-unexported_symbol,\"__Unwind_*\"",
 					"-Wl,-unexported_symbol,\"_unw_*\"",
+					"-Wl,-unexported_symbol,\"_OBJC_IVAR_*\"",
 					"-Wl,-hidden-lCHIP",
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = com.csa.matter;