--- seamonkey-2.48/mozilla/ipc/chromium/src/base/message_pump_libevent.cc.orig
+++ seamonkey-2.48/mozilla/ipc/chromium/src/base/message_pump_libevent.cc
@@ -23,7 +23,7 @@
 // This macro checks that the _EVENT_SIZEOF_* constants defined in
 // ipc/chromiume/src/third_party/<platform>/event2/event-config.h are correct.
 #define CHECK_EVENT_SIZEOF(TYPE, type) \
-    static_assert(_EVENT_SIZEOF_##TYPE == sizeof(type), \
+    static_assert(EVENT__SIZEOF_##TYPE == sizeof(type), \
     "bad _EVENT_SIZEOF_"#TYPE);
 
 CHECK_EVENT_SIZEOF(LONG,      long);