diff --git a/mozilla/xpcom/io/nsLocalFileUnix.cpp b/mozilla/xpcom/io/nsLocalFileUnix.cpp
index 4045b20a0bd..7070468b9fe 100644
--- a/mozilla/xpcom/io/nsLocalFileUnix.cpp
+++ b/mozilla/xpcom/io/nsLocalFileUnix.cpp
@@ -1174,8 +1174,10 @@ nsLocalFile::IsSpecial(PRBool *_retval)
     VALIDATE_STAT_CACHE();
     *_retval = S_ISCHR(mCachedStat.st_mode)  ||
                S_ISBLK(mCachedStat.st_mode)  ||
-               S_ISFIFO(mCachedStat.st_mode) ||
-               S_ISSOCK(mCachedStat.st_mode);
+#ifndef XP_BEOS
+               S_ISSOCK(mCachedStat.st_mode) ||
+#endif
+               S_ISFIFO(mCachedStat.st_mode);
 
     return NS_OK;
 }