diff --git a/mozilla/modules/libjar/nsJAR.cpp b/mozilla/modules/libjar/nsJAR.cpp
index 6451d124489..aaf6ddd57bf 100644
--- a/mozilla/modules/libjar/nsJAR.cpp
+++ b/mozilla/modules/libjar/nsJAR.cpp
@@ -294,7 +294,7 @@ nsJAR::Extract(const char *zipEntry, nsIFile* outFile)
     outFile->Remove(PR_FALSE);
   else
   {
-#if defined(XP_UNIX)
+#if defined(XP_UNIX) || defined(XP_BEOS)
     if (item->flags & ZIFLAG_SYMLINK) 
     {
       nsCAutoString path;
diff --git a/mozilla/modules/libjar/nsZipArchive.cpp b/mozilla/modules/libjar/nsZipArchive.cpp
index c37b12dd4fc..f6834649465 100644
--- a/mozilla/modules/libjar/nsZipArchive.cpp
+++ b/mozilla/modules/libjar/nsZipArchive.cpp
@@ -111,6 +111,8 @@ char * strdup(const char *src)
     #include <unistd.h>
 #elif defined(XP_WIN) || defined(XP_OS2)
     #include <io.h>
+#elif defined(XP_BEOS)
+    #include <unistd.h>
 #endif
 
 #ifndef XP_UNIX /* we need to have some constant defined in limits.h and unistd.h */
@@ -683,7 +685,7 @@ PRInt32 nsZipArchive::ExtractFile(const char* zipEntry, const char* aOutname,
   {
     PR_Delete(aOutname);
   }
-#if defined(XP_UNIX)
+#if defined(XP_UNIX) || defined(XP_BEOS)
   else
   {
     if (ZIFLAG_SYMLINK & item->flags)
@@ -830,7 +832,7 @@ PRInt32 nsZipArchive::FindFree(nsZipFind* aFind)
   return ZIP_OK;
 }
 
-#ifdef XP_UNIX
+#if defined(XP_UNIX) || defined(XP_BEOS)
 //---------------------------------------------
 // nsZipArchive::ResolveSymlink
 //---------------------------------------------
diff --git a/mozilla/modules/libjar/nsZipArchive.h b/mozilla/modules/libjar/nsZipArchive.h
index 1096b1d1c04..d77b497c5ad 100644
--- a/mozilla/modules/libjar/nsZipArchive.h
+++ b/mozilla/modules/libjar/nsZipArchive.h
@@ -273,7 +273,7 @@ public:
 
   PRInt32 FindFree(nsZipFind *aFind);
 
-#ifdef XP_UNIX
+#if defined(XP_UNIX) || defined(XP_BEOS)
   /**
    * ResolveSymLinks
    * @param path      where the file is located