diff --git a/RDM.xcodeproj/xcshareddata/xcschemes/RDM.xcscheme b/RDM.xcodeproj/xcshareddata/xcschemes/RDM.xcscheme
index e6076f8..ceb701a 100644
--- a/RDM.xcodeproj/xcshareddata/xcschemes/RDM.xcscheme
+++ b/RDM.xcodeproj/xcshareddata/xcschemes/RDM.xcscheme
@@ -42,7 +42,7 @@
       </AdditionalOptions>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Release"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
diff --git a/ViewController.swift b/ViewController.swift
index 93d5fb7..5cdc114 100644
--- a/ViewController.swift
+++ b/ViewController.swift
@@ -137,8 +137,9 @@ import Cocoa
 	@IBAction func save(_ sender: Any) {
 		let resArray = resolutions.map { (r : Resolution) -> NSData in
 			var d = Data()
-			d.append(UnsafeBufferPointer(start: &r.width, count: 1))
-			d.append(UnsafeBufferPointer(start: &r.height, count: 1))
+			var w : UInt32 = r.width, h : UInt32 = r.height
+			d.append(UnsafeBufferPointer(start: &w, count: 1))
+			d.append(UnsafeBufferPointer(start: &h, count: 1))
 			if r.hiDPI {
 				var hiDPIFlag : [UInt32] = [0x1, 0x200000]
 				d.append(UnsafeBufferPointer(start: &hiDPIFlag, count: 2))