diff --git a/ipc/testshell/XPCShellEnvironment.cpp b/ipc/testshell/XPCShellEnvironment.cpp
index 455a14610..beb9667b2 100644
--- a/ipc/testshell/XPCShellEnvironment.cpp
+++ b/ipc/testshell/XPCShellEnvironment.cpp
@@ -55,7 +55,7 @@ namespace {
 static const char kDefaultRuntimeScriptFilename[] = "xpcshell.js";
 
 inline XPCShellEnvironment*
-Environment(Handle<JSObject*> global)
+Environment(JS::Handle<JSObject*> global)
 {
     AutoJSAPI jsapi;
     if (!jsapi.Init(global)) {