diff --git a/mozilla/dbm/include/mcom_db.h b/mozilla/dbm/include/mcom_db.h
index 2625aa0b4d4..64dabe72532 100644
--- a/mozilla/dbm/include/mcom_db.h
+++ b/mozilla/dbm/include/mcom_db.h
@@ -66,7 +66,7 @@
 #include <sys/byteorder.h>
 #endif
 
-#ifdef __linux
+#if defined(__linux) || defined(__BEOS__)
 #include <endian.h>
 #ifndef BYTE_ORDER
 #define BYTE_ORDER    __BYTE_ORDER