diff --git a/Trigger/TrigValidation/TrigValTools/bin/rootcomp.py b/Trigger/TrigValidation/TrigValTools/bin/rootcomp.py
index f09355a0d2be4ab91cafc9021fb86ec800f66ed1..d343a95a01c39992bf9580e69e9de98b2a9f6f18 100755
--- a/Trigger/TrigValidation/TrigValTools/bin/rootcomp.py
+++ b/Trigger/TrigValidation/TrigValTools/bin/rootcomp.py
@@ -126,6 +126,7 @@ def main():
       opts.skip += ["Trig.*CaloCellMaker.*/TCRec_"] # timing histograms in TrigCaloCellMaker
       opts.skip += ["HLTFramework/ROBDataProviderSvc"] # RDP histograms differ in MT due to caching
       opts.skip += ["HLTFramework/ByteStreamCnvSvc/ResultSizeByStream"] # ROOT bug, see ATR-21755, ROOT-10944 
+      opts.skip += ["HLTFramework/SchedulerMonSvc"] # ATR-22345, not reproducible by definition
 
    # Default thresholds
    if not opts.threshold: