diff --git a/scripts/TweakPSet.py b/scripts/TweakPSet.py
index 734cb9b8c4..d1a9c3b6f5 100644
--- a/scripts/TweakPSet.py
+++ b/scripts/TweakPSet.py
@@ -187,6 +187,11 @@ def createScriptLines(opts, pklIn):
     tweak.addParameter("process.maxEvents.input",
                        f"customTypeCms.untracked.int32({maxEvents})")
 
+    # special handling for LHE input files
+    if opts.lheInputFiles:
+        tweak.addParameter("process.source.skipEvents",
+                           f"customTypeCms.untracked.uint32({int(opts.firstEvent) - 1})")
+
     if opts.lastEvent:
         tweak.addParameter("process.source.lastEvent",
                            f"customTypeCms.untracked.uint32({opts.lastEvent})")