diff --git a/utils/deploy_tool/main.cpp b/utils/deploy_tool/main.cpp
index 3876c292..135edbb5 100644
--- a/utils/deploy_tool/main.cpp
+++ b/utils/deploy_tool/main.cpp
@@ -389,6 +389,7 @@ void patchNameTool() {
 		patch_list << (out_dir + fi.name());
 	}
 	piForeach (PIString local_lib, patch_list) {
+		execute("chmod +w \"" + local_lib + "\"");
 		fi.path = local_lib;
 		cmd = nametool + " -id \"@executable_path/../Frameworks/" + fi.name() + "\"";
 		cmd += " \"" + local_lib + "\" 2> /dev/null";