diff --git a/src/ROCKparams.h b/src/ROCKparams.h
index a970a5f83c48f3afb59c4bf2a13d4cf5983b4882..511d9c290de9793da898300caf0abf591bb338bc 100644
--- a/src/ROCKparams.h
+++ b/src/ROCKparams.h
@@ -70,6 +70,7 @@ public:
         parms.kappa=50;
         parms.kappa_prime=0;
         parms.lambda=0;
+        parms.nucl_score_threshold=0;
         verbose_mode=0;
         cms_size=0;
         expected_collision_proba=0.0;