diff --git a/clustering/scripts/gen_central_electrons.cxx b/clustering/scripts/gen_central_electrons.cxx
index 06867dfaea7507522bf41a0ffc3ca87d413fb301..e3e08bd44007fd907bbe0188d11ac2686e0897a4 100644
--- a/clustering/scripts/gen_central_electrons.cxx
+++ b/clustering/scripts/gen_central_electrons.cxx
@@ -42,7 +42,7 @@ void gen_central_electrons(int n_events = 100,
     Double_t p     = r1->Uniform(1.0, 10.0);
     Double_t phi   = r1->Uniform(0.0, 2.0 * M_PI);
     Double_t costh = r1->Uniform(cos_theta_min, cos_theta_max);
-    Double_t th    = std::acos(costh);
+    Double_t th    = M_PI/2.1;//std::acos(costh);
     Double_t px    = p * std::cos(phi) * std::sin(th);
     Double_t py    = p * std::sin(phi) * std::sin(th);
     Double_t pz    = p * std::cos(th);