diff --git a/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ItemDef.py b/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ItemDef.py
index daae0f5404ca7c1a19825f6f82707e78a1774a14..3fdde13cd53e2140f0717955b7c71ed452edfa47 100755
--- a/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ItemDef.py
+++ b/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ItemDef.py
@@ -200,6 +200,7 @@ class ItemDef:
         LVL1MenuItem('L1_MU11' ).setLogic( d.MU11 & physcond).setTriggerType(TT.muon)
         LVL1MenuItem('L1_MU15' ).setLogic( d.MU15 & physcond).setTriggerType(TT.muon)
         LVL1MenuItem('L1_MU20' ).setLogic( d.MU20 & physcond).setTriggerType(TT.muon)
+        LVL1MenuItem('L1_MU21' ).setLogic( d.MU21 & physcond).setTriggerType(TT.muon)
 
         # 2xMU, 3xMU, 4xMU
         LVL1MenuItem('L1_2MU0'     ).setLogic( d.MU0.x(2)        & physcond).setTriggerType(TT.muon)
diff --git a/Trigger/TriggerCommon/TriggerMenu/python/l1menu/Menu_MC_pp_v7.py b/Trigger/TriggerCommon/TriggerMenu/python/l1menu/Menu_MC_pp_v7.py
index 288a9303e174b5f88f7a84a07880b180720d66fd..97ae04dc8c5118fca2d75af83697037f91653db3 100644
--- a/Trigger/TriggerCommon/TriggerMenu/python/l1menu/Menu_MC_pp_v7.py
+++ b/Trigger/TriggerCommon/TriggerMenu/python/l1menu/Menu_MC_pp_v7.py
@@ -139,7 +139,7 @@ def defineMenu():
         #------------------------
         
         # 6 x MU
-        'MU4', 'MU6', 'MU10', 'MU11', 'MU15', 'MU20',
+        'MU4', 'MU6', 'MU10', 'MU11', 'MU20', 'MU21',
 
 
         #------------------------
@@ -390,7 +390,7 @@ def defineMenu():
         #'L1_JJ15.23ETA49', # 4x4 window
 
         # single MU
-        "L1_MU4", "L1_MU6", "L1_MU10", "L1_MU11", "L1_MU15", "L1_MU20",
+        "L1_MU4", "L1_MU6", "L1_MU10", "L1_MU11", "L1_MU20", "L1_MU21",
 
         "L1_MU4_EMPTY", "L1_MU6_EMPTY", "L1_MU4_FIRSTEMPTY", "L1_MU11_EMPTY",
         'L1_MU4_UNPAIRED_ISO','L1_MU4_UNPAIRED_NONISO',
@@ -727,8 +727,6 @@ def defineMenu():
         'L1_LFV-MU6',
         'L1_LFV-EM8I',
         'L1_LFV-EM15I',
-        'L1_EM7_MU15',
-        'L1_EM8VH_MU15',
         'L1_DPHI-J20s2XE50',
         'L1_J40_XE50_DPHI-J20s2XE50',
         'L1_DPHI-J20XE50',
@@ -877,7 +875,6 @@ def defineMenu():
 
         #item with FTK trigger type, for FTK commissioning
         'L1_MU6_FTK',
-        'L1_MU15_FTK',
         'L1_MU20_FTK',
         'L1_TAU12IM_FTK', 
         'L1_TAU20IM_FTK',
@@ -919,8 +916,8 @@ def defineMenu():
         'L1_MU6' : 15,
         'L1_MU10' : 16,
         'L1_MU11' : 256,
-        'L1_MU15' : 17,
         'L1_MU20' : 18,
+        'L1_MU21' : 17,
         'L1_MU4_EMPTY' : 19,
         'L1_MU6_EMPTY' : 66,
         'L1_MU4_FIRSTEMPTY' : 20,
@@ -1338,8 +1335,6 @@ def defineMenu():
         'L1_LFV-MU6' : 332,
         'L1_LFV-EM8I' : 320,
         'L1_LFV-EM15I' : 321,
-        'L1_EM7_MU15' : 322,
-        'L1_EM8VH_MU15' : 48,
         'L1_DPHI-J20s2XE50' : 323,
         'L1_DPHI-J20XE50' : 324,
         'L1_DPHI-CJ20XE50' : 325,
@@ -1537,7 +1532,6 @@ def defineMenu():
 
         
         'L1_MU6_FTK'                           : 499,
-        'L1_MU15_FTK'                          : 497,
         'L1_MU20_FTK'                          : 500,
         'L1_TAU12IM_FTK'                       : 501,
         'L1_TAU20IM_FTK'                       : 86,
diff --git a/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ThresholdDef.py b/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ThresholdDef.py
index 34fffd254a838b950826ae9e3645a659a0ada85e..97c7aa8492663cadff25cec9bd970464f7e4211d 100644
--- a/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ThresholdDef.py
+++ b/Trigger/TriggerCommon/TriggerMenu/python/l1menu/ThresholdDef.py
@@ -19,7 +19,7 @@ class ThresholdDef:
         # MUON
         ThresholdValue.setDefaults('MUON', {'etamin' : -49,'etamax' : 49, 'phimin' : 0,'phimax' : 64}) # keep this as an example how defaults for groups can be defined
 
-        for thrV in [0, 4, 6, 10, 11, 15, 20]:
+        for thrV in [0, 4, 6, 10, 11, 15, 20, 21]:
             tc.registerThr('MU%i' % thrV, 'MUON').addThrValue(thrV)
 
 
diff --git a/Trigger/TriggerCommon/TriggerMenu/python/menu/L1Seeds.py b/Trigger/TriggerCommon/TriggerMenu/python/menu/L1Seeds.py
index 225747b3cdbc83ce12c9a059e1cf3cf8707b2099..7aad261158046eca511110c1ceb32db44ba5a22d 100644
--- a/Trigger/TriggerCommon/TriggerMenu/python/menu/L1Seeds.py
+++ b/Trigger/TriggerCommon/TriggerMenu/python/menu/L1Seeds.py
@@ -288,7 +288,7 @@ def getL1ALFA_ELAS(l1seed):
 #####################################
 def getL1LowLumi(l1seed):
 
-    L1LowLumi_seeds = 'L1_EM20VH,L1_2EM10VH,L1_MU15,L1_2MU6,L1_3MU4,L1_EM15VH_MU10,L1_EM15I_MU4,L1_EM7_MU10,L1_2EM8VH_MU10,L1_TAU60,L1_TAU20IM_2TAU12IM_J25_2J20_3J12,L1_EM15HI_2TAU12IM_XE35,L1_MU10_TAU12IM_XE35,L1_TAU20_2TAU12_XE35,L1_TAU20IM_2TAU12IM_XE35,L1_EM15HI_2TAU12IM,L1_EM15HI_2TAU12IM_J25_3J12,L1_EM15HI_TAU40_2TAU15,L1_MU10_TAU12IM_J25_2J12,L1_MU10_TAU12IM,L1_J75,L1_4J15,L1_XE50,L1_3J25.0ETA23,L1_3J40,L1_2J15_XE55,L1_MU6_J40,L1_J75.31ETA49'
+    L1LowLumi_seeds = 'L1_EM20VH,L1_2EM10VH,L1_MU21,L1_2MU6,L1_3MU4,L1_EM15VH_MU10,L1_EM15I_MU4,L1_EM7_MU10,L1_2EM8VH_MU10,L1_TAU60,L1_TAU20IM_2TAU12IM_J25_2J20_3J12,L1_EM15HI_2TAU12IM_XE35,L1_MU10_TAU12IM_XE35,L1_TAU20_2TAU12_XE35,L1_TAU20IM_2TAU12IM_XE35,L1_EM15HI_2TAU12IM,L1_EM15HI_2TAU12IM_J25_3J12,L1_EM15HI_TAU40_2TAU15,L1_MU10_TAU12IM_J25_2J12,L1_MU10_TAU12IM,L1_J75,L1_4J15,L1_XE50,L1_3J25.0ETA23,L1_3J40,L1_2J15_XE55,L1_MU6_J40,L1_J75.31ETA49'
 
 
     # check if all the l1 background seeds given are in the current L1 menu