diff --git a/Components/DiskII/MacintoshDoubleDensityDrive.cpp b/Components/DiskII/MacintoshDoubleDensityDrive.cpp
index a45221eb3..657d78163 100644
--- a/Components/DiskII/MacintoshDoubleDensityDrive.cpp
+++ b/Components/DiskII/MacintoshDoubleDensityDrive.cpp
@@ -170,9 +170,7 @@ bool DoubleDensityDrive::read() {
 
 		case CA2|CA1|CA0|SEL:	// Drive installed.
 								// (0 = present, 1 = missing)
-								//
-								// TODO: why do I need to return this the wrong way around for the Mac Plus?
-		return true;
+		return false;
 	}
 }
 
diff --git a/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme b/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme
index 01069c685..b974f72bf 100644
--- a/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme	
+++ b/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme	
@@ -62,7 +62,7 @@
       </Testables>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Release"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       enableASanStackUseAfterReturn = "YES"