diff --git a/code/ryzom/client/src/init.cpp b/code/ryzom/client/src/init.cpp
index 1644f7e2d..6958fe790 100644
--- a/code/ryzom/client/src/init.cpp
+++ b/code/ryzom/client/src/init.cpp
@@ -556,10 +556,9 @@ void checkDriverDepth ()
 
 static std::string replaceApplicationDirToken(const std::string &dir)
 {
-
 #ifdef NL_OS_MAC
 	// if client_default.cfg is not in current directory, and it's not an absolute path, use application default directory
-	if (!CFile::isExists("client_default.cfg") && dir.size()>0 && dir[0]!='/')
+	if (!CFile::isExists("client_default.cfg") && !dir.empty() && dir[0]!='/')
 	{
 		return getAppBundlePath() + "/Contents/Resources/" + dir;
 	}
diff --git a/code/ryzom/client/src/login_patch.cpp b/code/ryzom/client/src/login_patch.cpp
index e98cd1e32..da94f37d6 100644
--- a/code/ryzom/client/src/login_patch.cpp
+++ b/code/ryzom/client/src/login_patch.cpp
@@ -3398,6 +3398,7 @@ bool CPatchManager::extract(const std::string& patchPath,
 			ok = true;
 		}
 	}
+
 	if (!ok)
 	{
 		// nothing to extract
@@ -3407,15 +3408,21 @@ bool CPatchManager::extract(const std::string& patchPath,
 	// extract
 	uint nblab = 0;
 	pPM->deleteFile(updateBatchFilename, false, false);
+
 	FILE *fp = fopen (updateBatchFilename.c_str(), "wt");
+
 	if (fp == 0)
 	{
 		string err = toString("Can't open file '%s' for writing: code=%d %s (error code 29)", updateBatchFilename.c_str(), errno, strerror(errno));
 		throw Exception (err);
 	}
+
+#ifdef NL_OS_WINDOWS
 	fprintf(fp, "@echo off\n");
 	fprintf(fp, "ping 127.0.0.1 -n 7 -w 1000 > nul\n"); // wait
-
+#else
+	// TODO: for Linux and OS X
+#endif
 
 	// Unpack files with category ExtractPath non empty
 	for (uint32 j = 0; j < sourceFilename.size(); ++j)
@@ -3442,21 +3449,32 @@ bool CPatchManager::extract(const std::string& patchPath,
 					string DstPath = CPath::standardizeDosPath(extractPath[j]);
 					string DstName = DstPath + vFilenames[fff];
 					NLMISC::CFile::createDirectoryTree(extractPath[j]);
-					// this file must be moved
 
+					// this file must be moved
+#ifdef NL_OS_WINDOWS
 					fprintf(fp, ":loop%u\n", nblab);
 					fprintf(fp, "attrib -r -a -s -h %s\n", DstName.c_str());
 					fprintf(fp, "del %s\n", DstName.c_str());
 					fprintf(fp, "if exist %s goto loop%u\n", DstName.c_str(), nblab);
 					fprintf(fp, "move %s %s\n", SrcName.c_str(), DstPath.c_str());
+#else
+					// TODO: for Linux and OS X
+#endif
+
 					nblab++;
+
 				}
 			}
 		}
 	}
 
 
+#ifdef NL_OS_WINDOWS
 	fprintf(fp, "start %s %%1 %%2 %%3\n", execName.c_str());
+#else
+	// TODO: for Linux and OS X
+#endif
+
 	fclose(fp);
 
 	if (stopFun)