diff --git a/src/nucsyn/nucsyn_parameters.h b/src/nucsyn/nucsyn_parameters.h
index 561e77d1e8b3a0073768a259d8720128a58fa481..ced7976af93f7aa6dd6898a661c89fef1210c7bc 100644
--- a/src/nucsyn/nucsyn_parameters.h
+++ b/src/nucsyn/nucsyn_parameters.h
@@ -724,7 +724,7 @@ undances with s-process
 /* define NUCSYN_GCE to modify yield output for gce.pl
  * NB this just activates other defines, and turns some off.
  */
-#define NUCSYN_GCE
+//#define NUCSYN_GCE
 
 #ifdef NUCSYN_GCE