diff --git a/PhysicsTools/NanoAOD/python/electrons_cff.py b/PhysicsTools/NanoAOD/python/electrons_cff.py
index a0901da9e0346..39ea4db20dff8 100644
--- a/PhysicsTools/NanoAOD/python/electrons_cff.py
+++ b/PhysicsTools/NanoAOD/python/electrons_cff.py
@@ -318,6 +318,7 @@ def _get_bitmapVIDForEle_docstring(modules,WorkingPoints):
         dxyErr = Var("edB('PV2D')",float,doc="dxy uncertainty, in cm",precision=6),
         ip3d = Var("abs(dB('PV3D'))",float,doc="3D impact parameter wrt first PV, in cm",precision=10),
         sip3d = Var("abs(dB('PV3D')/edB('PV3D'))",float,doc="3D impact parameter significance wrt first PV, in cm",precision=10),
+        deltaEtaSC = Var("superCluster().eta()-eta()",float,doc="delta eta (SC,ele) with sign",precision=10),
         superclusterEta = Var("superCluster().eta()",float,doc="supercluster eta",precision=10),
         r9 = Var("full5x5_r9()",float,doc="R9 of the supercluster, calculated with full 5x5 region",precision=10),
         sieie = Var("full5x5_sigmaIetaIeta()",float,doc="sigma_IetaIeta of the supercluster, calculated with full 5x5 region",precision=10),