diff --git a/common/router1.cc b/common/router1.cc
index 94c7070e..de5caa5a 100644
--- a/common/router1.cc
+++ b/common/router1.cc
@@ -148,6 +148,8 @@ struct Router
                 bool foundRipupNet = false;
                 thisVisitCnt++;
 
+                next_delay += ctx->getWireDelay(next_wire).avgDelay();
+
                 if (!ctx->checkWireAvail(next_wire)) {
                     if (!ripup)
                         continue;
@@ -226,7 +228,7 @@ struct Router
             : ctx(ctx), scores(scores), ripup(ripup), ripup_penalty(ripup_penalty)
     {
         std::unordered_map<WireId, delay_t> src_wires;
-        src_wires[src_wire] = 0;
+        src_wires[src_wire] = ctx->getWireDelay(src_wire).avgDelay();
         route(src_wires, dst_wire);
         routedOkay = visited.count(dst_wire);
 
@@ -284,7 +286,7 @@ struct Router
             log("    Source wire: %s\n", ctx->getWireName(src_wire).c_str(ctx));
 
         std::unordered_map<WireId, delay_t> src_wires;
-        src_wires[src_wire] = 0;
+        src_wires[src_wire] = ctx->getWireDelay(src_wire).avgDelay();
 
         ripup_net(ctx, net_name);
         ctx->bindWire(src_wire, net_name, STRENGTH_WEAK);
diff --git a/ecp5/arch.h b/ecp5/arch.h
index 944aedea..bf36ef2f 100644
--- a/ecp5/arch.h
+++ b/ecp5/arch.h
@@ -578,6 +578,12 @@ struct Arch : BaseCtx
             return wire_to_net.at(wire);
     }
 
+    DelayInfo getWireDelay(WireId wire) const
+    {
+        DelayInfo delay;
+        return delay;
+    }
+
     WireRange getWires() const
     {
         WireRange range;
diff --git a/generic/arch.h b/generic/arch.h
index ea4bb565..e1516569 100644
--- a/generic/arch.h
+++ b/generic/arch.h
@@ -157,6 +157,7 @@ struct Arch : BaseCtx
     bool checkWireAvail(WireId wire) const;
     IdString getBoundWireNet(WireId wire) const;
     IdString getConflictingWireNet(WireId wire) const;
+    DelayInfo getWireDelay(WireId wire) const { return DelayInfo(); }
     const std::vector<WireId> &getWires() const;
 
     PipId getPipByName(IdString name) const;
diff --git a/ice40/arch.h b/ice40/arch.h
index beba2ccf..21169298 100644
--- a/ice40/arch.h
+++ b/ice40/arch.h
@@ -548,6 +548,12 @@ struct Arch : BaseCtx
         return wire_to_net[wire.index];
     }
 
+    DelayInfo getWireDelay(WireId wire) const
+    {
+        DelayInfo delay;
+        return delay;
+    }
+
     WireRange getWires() const
     {
         WireRange range;