diff --git a/src/engine/platform/arcade.cpp b/src/engine/platform/arcade.cpp
index 4487932c2..1713e9d8f 100644
--- a/src/engine/platform/arcade.cpp
+++ b/src/engine/platform/arcade.cpp
@@ -251,6 +251,10 @@ void DivPlatformArcade::tick() {
       }
     }
 
+    if (chan[i].std.hadWave) {
+      rWrite(0x1b,chan[i].std.wave&3);
+    }
+
     if (chan[i].std.hadEx1) {
       amDepth=chan[i].std.ex1;
       immWrite(0x19,amDepth);
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 369f4f69d..99e5acb66 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -1638,6 +1638,7 @@ void FurnaceGUI::drawInsEdit() {
             NORMAL_MACRO(ins->std.ex1Macro,ins->std.ex1MacroLen,ins->std.ex1MacroLoop,0,127,"ex1","AM Depth",128,ins->std.ex1MacroOpen,false,NULL,false,NULL,0,0,0,NULL,uiColors[GUI_COLOR_MACRO_OTHER],mmlString[4],0,127);
             NORMAL_MACRO(ins->std.ex2Macro,ins->std.ex2MacroLen,ins->std.ex2MacroLoop,0,127,"ex2","PM Depth",128,ins->std.ex2MacroOpen,false,NULL,false,NULL,0,0,0,NULL,uiColors[GUI_COLOR_MACRO_OTHER],mmlString[5],0,127);
             NORMAL_MACRO(ins->std.ex3Macro,ins->std.ex3MacroLen,ins->std.ex3MacroLoop,0,255,"ex3","LFO Speed",128,ins->std.ex3MacroOpen,false,NULL,false,NULL,0,0,0,NULL,uiColors[GUI_COLOR_MACRO_OTHER],mmlString[6],0,255);
+            NORMAL_MACRO(ins->std.waveMacro,ins->std.waveMacroLen,ins->std.waveMacroLoop,0,3,"wave","LFO Shape",48,ins->std.waveMacroOpen,false,NULL,false,NULL,0,0,0,NULL,uiColors[GUI_COLOR_MACRO_WAVE],mmlString[7],0,3);
             MACRO_END;
             ImGui::EndTabItem();
           }