diff --git a/test/ref-results/Sherpa/ZH/Run_ZH.dat b/test/ref-results/Sherpa/ZH/Run_ZH.dat
index 9cad975..92a3b7d 100644
--- a/test/ref-results/Sherpa/ZH/Run_ZH.dat
+++ b/test/ref-results/Sherpa/ZH/Run_ZH.dat
@@ -11,8 +11,6 @@
 
  MASS[25] 125;
  WIDTH[25] 0;
- MASS[11] 0.0005111;
- WIDTH[11] 0;
  MASS[23] 91.1876;
  WIDTH[23] 2.4952;
  MASS[24] 80.379;