diff --git a/mac/Audacity.xcodeproj/project.pbxproj b/mac/Audacity.xcodeproj/project.pbxproj
index 8f443d329..f5b1f13cc 100644
--- a/mac/Audacity.xcodeproj/project.pbxproj
+++ b/mac/Audacity.xcodeproj/project.pbxproj
@@ -2675,7 +2675,7 @@
 		28D540040FD1912A00FA7C75 /* ScriptCommandRelay.h */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 3; lastKnownFileType = sourcecode.c.h; path = ScriptCommandRelay.h; sourceTree = "<group>"; tabWidth = 3; };
 		28D587C70E264CF3009C7DEA /* LoadLV2.cpp */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 3; lastKnownFileType = sourcecode.cpp.cpp; name = LoadLV2.cpp; path = lv2/LoadLV2.cpp; sourceTree = "<group>"; tabWidth = 3; };
 		28D587C80E264CF3009C7DEA /* LoadLV2.h */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 3; lastKnownFileType = sourcecode.c.h; name = LoadLV2.h; path = lv2/LoadLV2.h; sourceTree = "<group>"; tabWidth = 3; };
-		28D587C90E264CF4009C7DEA /* LV2Effect.cpp */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 3; lastKnownFileType = sourcecode.cpp.cpp; name = LV2Effect.cpp; path = lv2/LV2Effect.cpp; sourceTree = "<group>"; tabWidth = 3; };
+		28D587C90E264CF4009C7DEA /* LV2Effect.cpp */ = {isa = PBXFileReference; explicitFileType = sourcecode.cpp.objcpp; fileEncoding = 5; indentWidth = 3; name = LV2Effect.cpp; path = lv2/LV2Effect.cpp; sourceTree = "<group>"; tabWidth = 3; };
 		28D587CA0E264CF4009C7DEA /* LV2Effect.h */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 3; lastKnownFileType = sourcecode.c.h; name = LV2Effect.h; path = lv2/LV2Effect.h; sourceTree = "<group>"; tabWidth = 3; };
 		28D65C700B97E54B000E001A /* AutoDuck.cpp */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 3; lastKnownFileType = sourcecode.cpp.cpp; path = AutoDuck.cpp; sourceTree = "<group>"; tabWidth = 3; };
 		28D65C710B97E54B000E001A /* AutoDuck.h */ = {isa = PBXFileReference; fileEncoding = 5; indentWidth = 3; lastKnownFileType = sourcecode.c.h; path = AutoDuck.h; sourceTree = "<group>"; tabWidth = 3; };
diff --git a/src/effects/lv2/LV2Effect.cpp b/src/effects/lv2/LV2Effect.cpp
index 22ce5c54b..dd48c3bd0 100644
--- a/src/effects/lv2/LV2Effect.cpp
+++ b/src/effects/lv2/LV2Effect.cpp
@@ -54,6 +54,10 @@
 #include <wx/msw/wrapwin.h>
 #endif
 
+#if defined(__WXMAC__)
+#include <Appkit/Appkit.h>
+#endif
+
 // Define the static URI nodes
 #undef URI
 #define URI(n, u) LilvNode *LV2Effect::n = NULL;
@@ -104,7 +108,6 @@ LV2EffectMeter::~LV2EffectMeter()
 {
 }
 
-
 void LV2EffectMeter::OnIdle(wxIdleEvent & WXUNUSED(evt))
 {
    if (mLastValue != mCtrl.mVal)
@@ -1478,10 +1481,6 @@ bool LV2Effect::BuildFancy()
       return false;
    }
 
-//   wxBoxSizer *hs = new wxBoxSizer(wxVERTICAL);
-//   vs->Add(mContainer, 0, wxALIGN_CENTER);
-//   mParent->SetSizer(vs);
-//wxWindow *mContainer = mParent;
 #if defined(__WXGTK__)
    // Make sure the parent has a window
    if (!gtk_widget_get_window(GTK_WIDGET(mContainer->m_wxwindow)))
@@ -1493,6 +1492,7 @@ bool LV2Effect::BuildFancy()
 #elif defined(__WXMSW__)
    mParentFeature->data = mContainer->GetHandle();
 #elif defined(__WXMAC__)
+   mParentFeature->data = mContainer->GetHandle();
 #endif
 
    mInstanceAccessFeature->data = lilv_instance_get_handle(mMaster);
@@ -1554,7 +1554,9 @@ bool LV2Effect::BuildFancy()
    GetWindowRect(widget, &rect);
    si->SetMinSize(wxSize(rect.right - rect.left, rect.bottom - rect.top));
 #elif defined(__WXMAC__)
-//   si->SetMinSize(wxSize(sz.width, sz.height));
+   NSView *view = (NSView *) suil_instance_get_widget(mSuilInstance);
+   NSSize sz = [view frame].size;
+   si->SetMinSize(sz.width, sz.height);
 #endif
 
    mParent->SetSizerAndFit(vs);