diff --git a/js/xpconnect/src/nsCxPusher.cpp b/js/xpconnect/src/nsCxPusher.cpp
index b1456b40e4b1..c6d3240cb99e 100644
--- a/js/xpconnect/src/nsCxPusher.cpp
+++ b/js/xpconnect/src/nsCxPusher.cpp
@@ -139,6 +139,7 @@ AutoCxPusher::AutoCxPusher(JSContext* cx, bool allowNull) : mScriptIsRunning(fal
 #endif
 }
 
+NS_EXPORT
 AutoCxPusher::~AutoCxPusher()
 {
   // Leave the request before popping.
diff --git a/js/xpconnect/src/nsCxPusher.h b/js/xpconnect/src/nsCxPusher.h
index b734f8f1eed1..ac062bcef602 100644
--- a/js/xpconnect/src/nsCxPusher.h
+++ b/js/xpconnect/src/nsCxPusher.h
@@ -26,7 +26,8 @@ class MOZ_STACK_CLASS AutoCxPusher
 {
 public:
   AutoCxPusher(JSContext *aCx, bool aAllowNull = false);
-  ~AutoCxPusher();
+  // XPCShell uses an nsCxPusher, which contains an AutoCxPusher.
+  NS_EXPORT ~AutoCxPusher();
 
   nsIScriptContext* GetScriptContext() { return mScx; }