diff --git a/Alignment/OfflineValidation/python/TkAlAllInOneTool/MTS_cfg.py b/Alignment/OfflineValidation/python/TkAlAllInOneTool/MTS_cfg.py
index 6046265e8592a..e6017bc6dce92 100644
--- a/Alignment/OfflineValidation/python/TkAlAllInOneTool/MTS_cfg.py
+++ b/Alignment/OfflineValidation/python/TkAlAllInOneTool/MTS_cfg.py
@@ -66,6 +66,7 @@
 
 else:
      goodLumiSecs = cms.untracked.VLuminosityBlockRange()
+process.source.lumisToProcess = goodLumiSecs
 
 ###################################################################
 # Runs and events