diff --git a/gowin/arch.cc b/gowin/arch.cc
index 461b64c8..8c908b04 100644
--- a/gowin/arch.cc
+++ b/gowin/arch.cc
@@ -523,6 +523,7 @@ void Arch::setBelDecal(BelId bel, DecalXY active, DecalXY inactive)
 
 void Arch::setDefaultDecals(void)
 {
+#ifndef NO_GUI
     for (BelId bel : getBels()) {
         gfxSetBelDefaultDecal(this, bel_info(bel));
     }
@@ -533,6 +534,7 @@ void Arch::setDefaultDecals(void)
         gfxSetWireDefaultDecal(this, wire_info(wire));
     }
     fixClockSpineDecals();
+#endif
 }
 
 void Arch::setGroupDecal(GroupId group, DecalXY decalxy)
@@ -1125,8 +1127,10 @@ Arch::Arch(ArchArgs args) : args(args)
     addDecalGraphic(IdString(), GraphicElement());
 
     if (args.gui) {
+#ifndef NO_GUI
         // decals
         gfxCreateBelDecals(this);
+#endif
     }
 
     // setup package
@@ -1216,11 +1220,13 @@ Arch::Arch(ArchArgs args) : args(args)
         int col = i % db->cols;
         const TilePOD *tile = db->grid[i].get();
         if (args.gui) {
+#ifndef NO_GUI
             // CRU decal
             snprintf(buf, 32, "R%dC%d_CRU", row + 1, col + 1);
             grpname = id(buf);
             addGroup(grpname);
             setGroupDecal(grpname, gfxGetCruGroupDecalXY(col, row));
+#endif
         }
         // setup wires
         const PairPOD *pips[2] = {tile->pips.get(), tile->clock_pips.get()};
@@ -1420,8 +1426,10 @@ Arch::Arch(ArchArgs args) : args(args)
                     snprintf(buf, 32, "R%dC%d_LUT_GRP%d", row + 1, col + 1, z);
                     grpname = id(buf);
                     if (args.gui) {
+#ifndef NO_GUI
                         addGroup(grpname);
                         setGroupDecal(grpname, gfxGetLutGroupDecalXY(col, row, z >> 1));
+#endif
                     }
                 }
                 break;
diff --git a/gowin/gfx.cc b/gowin/gfx.cc
index 5abb1399..a06df6f8 100644
--- a/gowin/gfx.cc
+++ b/gowin/gfx.cc
@@ -24,6 +24,7 @@
 
 NEXTPNR_NAMESPACE_BEGIN
 
+#ifndef NO_GUI
 // LUTs
 const float lut_w = 0.6732 - 0.6386;
 const float lut_h = 0.9392 - 0.9074;
@@ -5824,5 +5825,6 @@ DecalXY gfxGetCruGroupDecalXY(int x, int y)
     decalxy.y = y;
     return decalxy;
 }
+#endif // NO_GUI
 
 NEXTPNR_NAMESPACE_END
diff --git a/gowin/gfx.h b/gowin/gfx.h
index 623b9fb2..4c798ed9 100644
--- a/gowin/gfx.h
+++ b/gowin/gfx.h
@@ -24,6 +24,7 @@
 
 NEXTPNR_NAMESPACE_BEGIN
 
+#ifndef NO_GUI
 void gfxCreateBelDecals(Arch *arch);
 void gfxSetBelDefaultDecal(Arch *arch, BelInfo &bel);
 void gfxSetIOBWireDecals(Arch *arch, BelInfo &bel);
@@ -32,6 +33,7 @@ void gfxSetPipDefaultDecal(Arch *arch, PipInfo &pip);
 void gfxSetWireDefaultDecal(Arch *arch, WireInfo &wire);
 DecalXY gfxGetLutGroupDecalXY(int x, int y, int z);
 DecalXY gfxGetCruGroupDecalXY(int x, int y);
+#endif
 
 NEXTPNR_NAMESPACE_END