1 files changed, 5 insertions, 1 deletions
diff --git a/lib/internal/bootstrap/pre_execution.js b/lib/internal/bootstrap/pre_execution.js
index 80ac97ee45..e58293e616 100644
--- a/lib/internal/bootstrap/pre_execution.js
+++ b/lib/internal/bootstrap/pre_execution.js
@@ -326,7 +326,11 @@ function setupChildProcessIpcChannel() {
     // Make sure it's not accidentally inherited by child processes.
     delete process.env.NODE_CHANNEL_FD;
 
-    require('child_process')._forkChild(fd);
+    const serializationMode =
+      process.env.NODE_CHANNEL_SERIALIZATION_MODE || 'json';
+    delete process.env.NODE_CHANNEL_SERIALIZATION_MODE;
+
+    require('child_process')._forkChild(fd, serializationMode);
     assert(process.send);
   }
 }