diff --git a/src/cocoa_init.m b/src/cocoa_init.m
index 213e41b1..8c60bb31 100644
--- a/src/cocoa_init.m
+++ b/src/cocoa_init.m
@@ -36,11 +36,11 @@
 #include <crt_externs.h>
 
 
-#if MAC_OS_X_VERSION_MIN_REQUIRED < 101000
+#if MAC_OS_X_VERSION_MAX_ALLOWED < 101000
 NSAppearanceName const NSAppearanceNameVibrantLight = @"NSAppearanceNameVibrantLight";
 NSAppearanceName const NSAppearanceNameVibrantDark = @"NSAppearanceNameVibrantDark";
 #endif
-#if MAC_OS_X_VERSION_MIN_REQUIRED < 101400
+#if MAC_OS_X_VERSION_MAX_ALLOWED < 101400
 NSAppearanceName const NSAppearanceNameDarkAqua = @"NSAppearanceNameDarkAqua";
 NSAppearanceName const NSAppearanceNameAccessibilityHighContrastAqua = @"NSAppearanceNameAccessibilityAqua";
 NSAppearanceName const NSAppearanceNameAccessibilityHighContrastDarkAqua = @"NSAppearanceNameAccessibilityDarkAqua";
diff --git a/src/cocoa_platform.h b/src/cocoa_platform.h
index 9246b4b8..84a0ace0 100644
--- a/src/cocoa_platform.h
+++ b/src/cocoa_platform.h
@@ -40,6 +40,7 @@
 #else
 typedef void* id;
 typedef void NSAppearance;
+typedef id NSString;
 #endif
 
 #if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
diff --git a/src/cocoa_window.m b/src/cocoa_window.m
index 16bd5eb3..4e32731a 100644
--- a/src/cocoa_window.m
+++ b/src/cocoa_window.m
@@ -1935,7 +1935,7 @@ GLFWtheme* _glfwGetThemeCocoa(_GLFWwindow* window)
     
     if (@available(macOS 10.09, *))
     {
-        nsAppearanceToGLFWTheme([window->ns.object appearance], theme);
+        nsAppearanceToGLFWTheme([(NSWindow*)window->ns.object appearance], theme);
     }
     
     if (@available(macOS 10.14, *)) {