diff --git a/mozilla/network/protocol/http/cookies.h b/mozilla/network/protocol/http/cookies.h
index ff5d1ed5f85..40a1bb1765c 100644
--- a/mozilla/network/protocol/http/cookies.h
+++ b/mozilla/network/protocol/http/cookies.h
@@ -21,6 +21,8 @@
 
 #include "mkgeturl.h"
 
+PR_BEGIN_EXTERN_C
+
 /* removes all cookies structs from the cookie list */
 extern void
 NET_RemoveAllCookies(void);
@@ -61,4 +63,6 @@ NET_SetCookieStringFromHttp(FO_Present_Types outputFormat,
                                 char * cur_url,
                                 char * set_cookie_header);
 
+PR_END_EXTERN_C
+
 #endif /* COOKIES_H */