diff --git a/JobConfig/digitize/prolog.fcl b/JobConfig/digitize/prolog.fcl
index 728025c4..c57d84ce 100644
--- a/JobConfig/digitize/prolog.fcl
+++ b/JobConfig/digitize/prolog.fcl
@@ -172,7 +172,8 @@ Digitize: {
     "keep mu2e::KalSeedmu2e::KalSeedMCvoidart::Assns_Trig*KSFMC_*_*",
     "keep mu2e::RecoCount_Trig*KSFMC_*_*",
     "keep mu2e::IntensityInfo*_Trig*_*_*",
-    "keep mu2e::IntensityInfo*_TT*_*_*"
+    "keep mu2e::IntensityInfo*_TT*_*_*",
+    "keep mu2e::FilterFraction_*_*_*"
   ]
     #    "keep mu2e::SimParticlemv_compressDetStepMCs_*_*",
     #"keep mu2e::GenParticles_compressDetStepMCs_*_*"