diff --git a/Configuration/Skimming/python/PDWG_ReserveDMu_SD_cff.py b/Configuration/Skimming/python/PDWG_ReserveDMu_SD_cff.py
index 960ed39079c60..55a94db4bd37c 100644
--- a/Configuration/Skimming/python/PDWG_ReserveDMu_SD_cff.py
+++ b/Configuration/Skimming/python/PDWG_ReserveDMu_SD_cff.py
@@ -10,5 +10,4 @@
 ReserveDMu.andOr = cms.bool( True )
 # we want to intentionally throw and exception
 # in case it does not match one of the HLT Paths
-# set to False now, switch to on once matrix is updated
-ReserveDMu.throw = cms.bool( False )
+ReserveDMu.throw = cms.bool( True )