diff --git a/src/objective-c/GRPCClient/private/GRPCChannel.h b/src/objective-c/GRPCClient/private/GRPCChannel.h
index fa9f6f28d1f541437dd540f3f86d7e991934448b..de0b58ffe4ad43910b4d27b67ec79af7b6a3c726 100644
--- a/src/objective-c/GRPCClient/private/GRPCChannel.h
+++ b/src/objective-c/GRPCClient/private/GRPCChannel.h
@@ -38,7 +38,7 @@
 // Each separate instance of this class represents at least one TCP connection to the provided host.
 // Create them using one of the subclasses |GRPCSecureChannel| and |GRPCUnsecuredChannel|.
 @interface GRPCChannel : NSObject
-@property(nonatomic) grpc_channel *unmanagedChannel;
+@property(nonatomic, readonly) grpc_channel *unmanagedChannel;
 
 - (instancetype)initWithChannel:(grpc_channel *)unmanagedChannel NS_DESIGNATED_INITIALIZER;
 @end