diff --git a/src/objective-c/GRPCClient/private/GRPCReachabilityFlagNames.xmacro.h b/src/objective-c/GRPCClient/private/GRPCReachabilityFlagNames.xmacro.h
index 02871d5d02856f1f3f64a215caadc37583324440..4b92504b555378e1d1ac2d7fa5c403ab7036a838 100644
--- a/src/objective-c/GRPCClient/private/GRPCReachabilityFlagNames.xmacro.h
+++ b/src/objective-c/GRPCClient/private/GRPCReachabilityFlagNames.xmacro.h
@@ -54,7 +54,9 @@
        GRPC_XMACRO_ITEM.
 #endif
 
+#if TARGET_OS_IPHONE
 GRPC_XMACRO_ITEM(isCell, IsWWAN)
+#endif
 GRPC_XMACRO_ITEM(reachable, Reachable)
 GRPC_XMACRO_ITEM(transientConnection, TransientConnection)
 GRPC_XMACRO_ITEM(connectionRequired, ConnectionRequired)