diff --git a/source/core/FtpFileSystem.cpp b/source/core/FtpFileSystem.cpp
index ee52d10c9..c32bb1af0 100644
--- a/source/core/FtpFileSystem.cpp
+++ b/source/core/FtpFileSystem.cpp
@@ -2400,7 +2400,7 @@ void __fastcall TFTPFileSystem::ReadCurrentDirectory()
 
         if (Result)
         {
-          if ((Path.Length() > 0) && (Path[1] != L'/'))
+          if ((Path.Length() > 0) && !UnixIsAbsolutePath(Path))
           {
             Path = L"/" + Path;
           }