diff --git a/include/sta/HpinDrvrLoad.hh b/include/sta/HpinDrvrLoad.hh
index e2674217..a5e4c9c0 100644
--- a/include/sta/HpinDrvrLoad.hh
+++ b/include/sta/HpinDrvrLoad.hh
@@ -36,8 +36,6 @@ public:
 		  const HpinDrvrLoad *drvr_load2) const;
 };
 
-typedef Set<HpinDrvrLoad*, HpinDrvrLoadLess> HpinDrvrLoads;
-
 // Abstract base class for visitDrvrLoadsThruHierPin visitor.
 class HpinDrvrLoadVisitor
 {
diff --git a/network/HpinDrvrLoad.cc b/network/HpinDrvrLoad.cc
index 65671042..07551c55 100644
--- a/network/HpinDrvrLoad.cc
+++ b/network/HpinDrvrLoad.cc
@@ -22,6 +22,8 @@
 
 namespace sta {
 
+typedef Set<HpinDrvrLoad*, HpinDrvrLoadLess> HpinDrvrLoads;
+
 static void
 visitPinsAboveNet2(const Pin *hpin,
 		   Net *above_net,