diff --git a/alt-tab-macos.xcodeproj/project.pbxproj b/alt-tab-macos.xcodeproj/project.pbxproj
index c66d3907..d40a9927 100644
--- a/alt-tab-macos.xcodeproj/project.pbxproj
+++ b/alt-tab-macos.xcodeproj/project.pbxproj
@@ -270,6 +270,7 @@
 				COMBINE_HIDPI_IMAGES = YES;
 				INFOPLIST_FILE = "alt-tab-macos/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.lwouis.alt-tab-macos";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 4.2;
@@ -284,6 +285,7 @@
 				COMBINE_HIDPI_IMAGES = YES;
 				INFOPLIST_FILE = "alt-tab-macos/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.lwouis.alt-tab-macos";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 4.2;
diff --git a/alt-tab-macos/logic/Preferences.swift b/alt-tab-macos/logic/Preferences.swift
index 18d416c4..abf46d27 100644
--- a/alt-tab-macos/logic/Preferences.swift
+++ b/alt-tab-macos/logic/Preferences.swift
@@ -79,7 +79,7 @@ class Preferences: Decodable {
     // NSEvent.ModifierFlags (e.g. control=262144, command=1048576, shift=131072, option=524288)
     static let metaModifierFlag = NSEvent.ModifierFlags(rawValue: decoded?.metaModifierFlagInt ?? 262144)
     // color for the currently selected cell
-    static let highlightColor = NSColor(named: decoded?.highlightColorString ?? "white") ?? .white
+    static let highlightColor = NSColor.white
     // derived properties
     static let font: NSFont = .systemFont(ofSize: Preferences.fontHeight)
 }