diff --git a/org/qmckl_jastrow.org b/org/qmckl_jastrow.org
index e2f4a23..c8a3ca2 100644
--- a/org/qmckl_jastrow.org
+++ b/org/qmckl_jastrow.org
@@ -28,7 +28,7 @@ these factors along with their derivatives.
 #endif
 
 #include <stdio.h>
-//#include "n2.h"
+#include "n2.h"
 
 int main() {
   qmckl_context context;