diff --git a/himbaechel/uarch/gatemate/route_mult.cc b/himbaechel/uarch/gatemate/route_mult.cc
index 31ebafc1..4a1ce961 100644
--- a/himbaechel/uarch/gatemate/route_mult.cc
+++ b/himbaechel/uarch/gatemate/route_mult.cc
@@ -438,7 +438,7 @@ void route_mult_x2y1_lower(Context *ctx, NetInfo *net, CellInfo *lower, Loc loc,
         auto sb_big_p05_x23 =
                 ctx->getWireByName(IdStringList::concat(x0y1, ctx->idf("SB_BIG.P05.X23")));
         auto sb_big_p05_ydiag = ctx->getWireByName(IdStringList::concat(x0y1, ctx->idf("SB_BIG.P05.YDIAG")));
-        // x2y1/IM.P05.D0 is x0y1/SB_BIG.P05.Y1
+        auto sb_big_p05_y1 = ctx->getWireByName(IdStringList::concat(x0y1, ctx->idf("SB_BIG.P05.Y1")));
 
         find_and_bind_downhill_pip(ctx, cpe_out1, sb_big_p07_d0, net);
         find_and_bind_downhill_pip(ctx, sb_big_p07_d0, sb_big_p07_y1, net);
@@ -447,7 +447,8 @@ void route_mult_x2y1_lower(Context *ctx, NetInfo *net, CellInfo *lower, Loc loc,
         find_and_bind_downhill_pip(ctx, sb_big_p06_x23, sb_big_p06_ydiag, net);
         find_and_bind_downhill_pip(ctx, sb_big_p06_ydiag, sb_big_p05_x23, net);
         find_and_bind_downhill_pip(ctx, sb_big_p05_x23, sb_big_p05_ydiag, net);
-        find_and_bind_downhill_pip(ctx, sb_big_p05_ydiag, in_mux, net);
+        find_and_bind_downhill_pip(ctx, sb_big_p05_ydiag, sb_big_p05_y1, net);
+        find_and_bind_downhill_pip(ctx, sb_big_p05_y1, in_mux, net);
     } else {
         auto sb_sml_p07_d0 = ctx->getWireByName(IdStringList::concat(x0y1, ctx->idf("SB_SML.P07.D0")));
         auto sb_sml_p07_y1_int = ctx->getWireByName(IdStringList::concat(x0y1, ctx->idf("SB_SML.P07.Y1_int")));