diff --git a/mozilla/modules/plugin/base/public/nptypes.h b/mozilla/modules/plugin/base/public/nptypes.h
index fc961c24d9a..95006e9c310 100644
--- a/mozilla/modules/plugin/base/public/nptypes.h
+++ b/mozilla/modules/plugin/base/public/nptypes.h
@@ -44,7 +44,7 @@
 #if defined(WIN32) || defined(OS2)
 typedef int int32_t;
 typedef unsigned int uint32_t;
-#elif defined(AIX)
+#elif defined(_AIX) || defined(__sun)
 #include <inttypes.h>
 #ifndef __cplusplus
 typedef int bool;