diff --git a/Machines/Apple/Macintosh/DriveSpeedAccumulator.cpp b/Machines/Apple/Macintosh/DriveSpeedAccumulator.cpp
index b7c5eac1e..a9748449e 100644
--- a/Machines/Apple/Macintosh/DriveSpeedAccumulator.cpp
+++ b/Machines/Apple/Macintosh/DriveSpeedAccumulator.cpp
@@ -20,10 +20,9 @@ void DriveSpeedAccumulator::post_sample(uint8_t sample) {
 
 	if(sample_pointer_ == samples_.size()) {
 		sample_pointer_ = 0;
-
-		for(int c = 0; c < 512; c += 32) {
-			printf("%u ", samples_[c]);
-		}
-		printf("\n");
+//		for(int c = 0; c < 512; c += 32) {
+//			printf("%u ", samples_[c]);
+//		}
+//		printf("\n");
 	}
 }
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 9c2dca9ce..cdac581d4 100644
--- a/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme	
+++ b/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme	
@@ -69,7 +69,7 @@
       </AdditionalOptions>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Release"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       enableASanStackUseAfterReturn = "YES"