diff --git a/update_mex.m b/update_mex.m
index 0531f7d..3e8db32 100644
--- a/update_mex.m
+++ b/update_mex.m
@@ -4,7 +4,7 @@ for i=1:size(D,1)
     f = D(i);
     name1 = ['template/' f.name];
     name2 = replace(f.name, '_wrapper','');
-    exp = sprintf('mex  %s %s', name2,name1);
+    exp = sprintf('mex  %s %s -I. -Itemplate', name2,name1);
     disp(exp);
     eval(exp);
 end
\ No newline at end of file