diff --git a/PhysicsTools/NanoAOD/python/jets_cff.py b/PhysicsTools/NanoAOD/python/jets_cff.py
index 19d133fd71090..fb7e550a0de3c 100644
--- a/PhysicsTools/NanoAOD/python/jets_cff.py
+++ b/PhysicsTools/NanoAOD/python/jets_cff.py
@@ -156,6 +156,7 @@
         nElectrons = Var("?hasOverlaps('electrons')?overlaps('electrons').size():0", int, doc="number of electrons in the jet"),
         btagCMVA = Var("bDiscriminator('pfCombinedMVAV2BJetTags')",float,doc="CMVA V2 btag discriminator",precision=10),
         btagDeepB = Var("bDiscriminator('pfDeepCSVJetTags:probb')+bDiscriminator('pfDeepCSVJetTags:probbb')",float,doc="DeepCSV b+bb tag discriminator",precision=10),
+        btagDeepFlavB = Var("bDiscriminator('pfDeepFlavourJetTags:probb')+bDiscriminator('pfDeepFlavourJetTags:probbb')",float,doc="DeepFlavour b+bb tag discriminator",precision=10),
         btagCSVV2 = Var("bDiscriminator('pfCombinedInclusiveSecondaryVertexV2BJetTags')",float,doc=" pfCombinedInclusiveSecondaryVertexV2 b-tag discriminator (aka CSVV2)",precision=10),
         btagDeepC = Var("bDiscriminator('pfDeepCSVJetTags:probc')",float,doc="DeepCSV charm btag discriminator",precision=10),
         #puIdDisc = Var("userFloat('pileupJetId:fullDiscriminant')",float,doc="Pilup ID discriminant",precision=10),