diff --git a/cumulus/src/designflow/technos.py b/cumulus/src/designflow/technos.py
index 0d69724a..2e80b51e 100644
--- a/cumulus/src/designflow/technos.py
+++ b/cumulus/src/designflow/technos.py
@@ -189,6 +189,7 @@ def setupSky130_c4m ( checkToolkit=None, pdkMasterTop=None ):
         cfg.misc.logMode             = True
         cfg.misc.verboseLevel1       = False
         cfg.misc.verboseLevel2       = False
+        cfg.viewer.pixelThreshold    = 5
         cfg.etesian.graphics         = 2
         cfg.anabatic.topRoutingLayer = 'm4'
         cfg.katana.eventsLimit       = 4000000