diff --git a/cumulus/src/plugins/alpha/chip/__init__.py b/cumulus/src/plugins/alpha/chip/__init__.py
index 69782229..ab62dc58 100644
--- a/cumulus/src/plugins/alpha/chip/__init__.py
+++ b/cumulus/src/plugins/alpha/chip/__init__.py
@@ -333,10 +333,10 @@ class CoreWire ( object ):
                                      , DbU.fromLambda( 1.0 )
                                      , self.bbSegment.getHeight()
                                      )
-            hChipBb = hChip.getBoundingBox( padLayer )
+            hChipBb = hChip.getBoundingBox()
             vStrapBb.merge( vStrapBb.getXMin(), hChipBb.getYMin() )
             vStrapBb.merge( vStrapBb.getXMin(), hChipBb.getYMax() )
-            hCoronaBb = hCorona.getBoundingBox( padLayer )
+            hCoronaBb = hCorona.getBoundingBox()
             self.conf.icorona.getTransformation().applyOn( hCoronaBb )
             vStrapBb.merge( vStrapBb.getXMin(), hCoronaBb.getYMin() )
             vStrapBb.merge( vStrapBb.getXMin(), hCoronaBb.getYMax() )