diff --git a/NPLib/Utility/nptool-libmap.cxx b/NPLib/Utility/nptool-libmap.cxx
index fc079d6066bd1145e4cb30828c662e5ffd626d7e..78236aba9774f99b09c888210daf39d7a50217d4 100644
--- a/NPLib/Utility/nptool-libmap.cxx
+++ b/NPLib/Utility/nptool-libmap.cxx
@@ -75,6 +75,8 @@ int main(int argc , char** argv){
     closedir (dir);
   }
 
+  system("chmod 755 liblist");
+
   // Generate the inc dir file for backward compatiblity
   // Create the list of custom detector from argument
   std::string detlist="";