diff --git a/test/core/iomgr/ios/CFStreamTests/CFStreamEndpointTests.mm b/test/core/iomgr/ios/CFStreamTests/CFStreamEndpointTests.mm
index fbc34c74d66..528f4b1cdad 100644
--- a/test/core/iomgr/ios/CFStreamTests/CFStreamEndpointTests.mm
+++ b/test/core/iomgr/ios/CFStreamTests/CFStreamEndpointTests.mm
@@ -167,7 +167,7 @@ static bool compare_slice_buffer_with_buffer(grpc_slice_buffer *slices, const ch
   slice = grpc_slice_from_static_buffer(write_buffer, kBufferSize);
   grpc_slice_buffer_add(&write_slices, slice);
   init_event_closure(&write_done, &write);
-  grpc_endpoint_write(ep_, &write_slices, &write_done);
+  grpc_endpoint_write(ep_, &write_slices, &write_done, nullptr);
 
   XCTAssertEqual([self waitForEvent:&write timeout:kWriteTimeout], YES);
   XCTAssertEqual(reinterpret_cast<grpc_error *>(write), GRPC_ERROR_NONE);
@@ -224,7 +224,7 @@ static bool compare_slice_buffer_with_buffer(grpc_slice_buffer *slices, const ch
   slice = grpc_slice_from_static_buffer(write_buffer, kBufferSize);
   grpc_slice_buffer_add(&write_slices, slice);
   init_event_closure(&write_done, &write);
-  grpc_endpoint_write(ep_, &write_slices, &write_done);
+  grpc_endpoint_write(ep_, &write_slices, &write_done, nullptr);
 
   XCTAssertEqual([self waitForEvent:&write timeout:kWriteTimeout], YES);
   XCTAssertEqual(reinterpret_cast<grpc_error *>(write), GRPC_ERROR_NONE);
@@ -273,7 +273,7 @@ static bool compare_slice_buffer_with_buffer(grpc_slice_buffer *slices, const ch
   slice = grpc_slice_from_static_buffer(write_buffer, kBufferSize);
   grpc_slice_buffer_add(&write_slices, slice);
   init_event_closure(&write_done, &write);
-  grpc_endpoint_write(ep_, &write_slices, &write_done);
+  grpc_endpoint_write(ep_, &write_slices, &write_done, nullptr);
 
   XCTAssertEqual([self waitForEvent:&write timeout:kWriteTimeout], YES);
   XCTAssertEqual(reinterpret_cast<grpc_error *>(write), GRPC_ERROR_NONE);