diff --git a/js/jsd/jsd_xpc.cpp b/js/jsd/jsd_xpc.cpp
index cda4d546600d..1a3ea5f4b831 100644
--- a/js/jsd/jsd_xpc.cpp
+++ b/js/jsd/jsd_xpc.cpp
@@ -5,7 +5,6 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "jsdbgapi.h"
-#include "jslock.h"
 #include "jsd_xpc.h"
 
 #include "js/GCAPI.h"
diff --git a/js/src/moz.build b/js/src/moz.build
index a29ab26330f6..e380dc07b419 100644
--- a/js/src/moz.build
+++ b/js/src/moz.build
@@ -40,7 +40,6 @@ EXPORTS += [
     'jscpucfg.h',
     'jsdbgapi.h',
     'jsfriendapi.h',
-    'jslock.h',
     'jsprf.h',
     'jsprototypes.h',
     'jsproxy.h',