diff --git a/search/Sta.cc b/search/Sta.cc
index 6c15cd53..f590e6b4 100644
--- a/search/Sta.cc
+++ b/search/Sta.cc
@@ -3708,34 +3708,6 @@ Sta::disconnectPin(Pin *pin)
   network->disconnectPin(pin);
 }
 
-void
-Sta::insertBuffer(const char *buffer_name,
-		  LibertyCell *buffer_cell,
-		  Net *net,
-		  PinSeq *load_pins,
-		  const char *buffer_out_net_name)
-{
-  Instance *parent = network_->topInstance();
-  LibertyPort *buffer_in_port = findCellPort(buffer_cell, PortDirection::input());
-  LibertyPort *buffer_out_port = findCellPort(buffer_cell, PortDirection::output());
-  if (buffer_in_port && buffer_out_port) {
-    Instance *buffer = makeInstance(buffer_name, buffer_cell, parent);
-    connectPin(buffer, buffer_in_port, net);
-
-    Net *buffer_out_net = makeNet(buffer_out_net_name, parent);
-    connectPin(buffer, buffer_out_port, buffer_out_net);
-
-    PinSeq::Iterator pin_iter(load_pins);
-    while (pin_iter.hasNext()) {
-      Pin *load_pin = pin_iter.next();
-      auto load_inst = network_->instance(load_pin);
-      auto load_port = network_->port(load_pin);
-      disconnectPin(load_pin);
-      connectPin(load_inst, load_port, buffer_out_net);
-    }
-  }
-}
-
 LibertyPort *
 Sta::findCellPort(LibertyCell *cell,
 		  PortDirection *dir)
diff --git a/search/Sta.hh b/search/Sta.hh
index f67e9bed..4cae275f 100644
--- a/search/Sta.hh
+++ b/search/Sta.hh
@@ -1103,16 +1103,6 @@ public:
   // disconnect_net
   virtual void disconnectPin(Pin *pin);
 
-  // Insert a buffer_cell instance named inst_name by adding it's input
-  // pin on net and moving load_pins from net to the output of
-  // the instance. buffer_cell must have one input and one output port.
-  // The buffer's parent is the top_instance.
-  void insertBuffer(const char *buffer_name,
-		    LibertyCell *buffer_cell,
-		    Net *net,
-		    PinSeq *load_pins,
-		    const char *buffer_out_net_name);
-
   // Network edit before/after methods.
   void makeInstanceAfter(Instance *inst);
   // Not used by Sta (connectPinAfter).
diff --git a/tcl/NetworkEdit.i b/tcl/NetworkEdit.i
index faf7ebc0..0fe381a4 100644
--- a/tcl/NetworkEdit.i
+++ b/tcl/NetworkEdit.i
@@ -93,16 +93,4 @@ disconnect_pin_cmd(Pin *pin)
   Sta::sta()->disconnectPin(pin);
 }
 
-void
-insert_buffer_cmd(const char *buffer_name,
-		  LibertyCell *buffer_cell,
-		  Net *net,
-		  PinSeq *load_pins,
-		  const char *buffer_out_net_name)
-{
-  Sta::sta()->insertBuffer(buffer_name, buffer_cell, net, load_pins,
-			   buffer_out_net_name);
-  delete load_pins;
-} 
-
 %} // inline