diff --git a/dom/file/ipc/IPCBlobInputStreamChild.cpp b/dom/file/ipc/IPCBlobInputStreamChild.cpp
index 441c78ac67db..96742b931c83 100644
--- a/dom/file/ipc/IPCBlobInputStreamChild.cpp
+++ b/dom/file/ipc/IPCBlobInputStreamChild.cpp
@@ -10,9 +10,6 @@
 #include "WorkerHolder.h"
 
 namespace mozilla {
-
-using namespace workers;
-
 namespace dom {
 
 namespace {