diff --git a/code/ryzom/client/src/login_patch.cpp b/code/ryzom/client/src/login_patch.cpp
index d9dfa487e..6bfb7bf1e 100644
--- a/code/ryzom/client/src/login_patch.cpp
+++ b/code/ryzom/client/src/login_patch.cpp
@@ -843,7 +843,7 @@ void CPatchManager::createBatchFile(CProductDescriptionForClient &descFile, bool
 				for (uint32 fff = 0; fff < vFilenames.size (); fff++)
 				{
 					string SrcPath = ClientPatchPath;
-					string DstPath = rCat.getUnpackTo();
+					string DstPath = CPath::standardizePath(rCat.getUnpackTo()); // to be sure there is a / at the end
 					NLMISC::CFile::createDirectoryTree(DstPath);
 
 					// this file must be moved