diff --git a/anabatic/src/AnabaticEngine.cpp b/anabatic/src/AnabaticEngine.cpp
index 81321562..fa25e8cf 100644
--- a/anabatic/src/AnabaticEngine.cpp
+++ b/anabatic/src/AnabaticEngine.cpp
@@ -124,6 +124,9 @@ namespace Anabatic {
     Box           ab       = getCell()->getAbutmentBox();
     RoutingGauge* rg       = _configuration->getRoutingGauge();
 
+    span.inflate( 0, -1 );
+    if (span.isEmpty()) return 0;
+
     const vector<RoutingLayerGauge*>& layerGauges = rg->getLayerGauges();
     for ( size_t depth=0 ; depth <= _configuration->getAllowedDepth() ; ++depth ) {
       if (layerGauges[depth]->getType() != Constant::Default) continue;
diff --git a/anabatic/src/Edge.cpp b/anabatic/src/Edge.cpp
index 56590f14..421d25e4 100644
--- a/anabatic/src/Edge.cpp
+++ b/anabatic/src/Edge.cpp
@@ -177,7 +177,7 @@ namespace Anabatic {
   {
     Interval side = getSide();
     _axis     = side.getCenter();
-    _capacity = getAnabatic()->getCapacity( side.inflate(0,-1), _flags );
+    _capacity = getAnabatic()->getCapacity( side, _flags );
 
     _flags.reset( Flags::Invalidated );
     cdebug.log(110) << "Edge::_revalidate() " << this << endl;