diff --git a/network/Network.i b/network/Network.i
index 767b4fd7..2a7d7ee0 100644
--- a/network/Network.i
+++ b/network/Network.i
@@ -768,6 +768,7 @@ capacitance(Corner *corner,
 	    const MinMax *min_max)
 {
   Sta *sta = Sta::sta();
+  sta->ensureLinked();
   float pin_cap, wire_cap;
   sta->connectedCap(self, corner, min_max, pin_cap, wire_cap);
   return pin_cap + wire_cap;