diff --git a/src/node_blob.cc b/src/node_blob.cc
index 99003cce50ed27..d227ec58223b17 100644
--- a/src/node_blob.cc
+++ b/src/node_blob.cc
@@ -38,7 +38,8 @@ Local<FunctionTemplate> Blob::GetConstructorTemplate(Environment* env) {
   Local<FunctionTemplate> tmpl = env->blob_constructor_template();
   if (tmpl.IsEmpty()) {
     tmpl = FunctionTemplate::New(env->isolate());
-    tmpl->InstanceTemplate()->SetInternalFieldCount(1);
+    tmpl->InstanceTemplate()->SetInternalFieldCount(
+        BaseObject::kInternalFieldCount);
     tmpl->Inherit(BaseObject::GetConstructorTemplate(env));
     tmpl->SetClassName(
         FIXED_ONE_BYTE_STRING(env->isolate(), "Blob"));