diff --git a/build/osx/wxdebug.xcconfig b/build/osx/wxdebug.xcconfig
index 404f5fa25d..4cd18dd2c0 100644
--- a/build/osx/wxdebug.xcconfig
+++ b/build/osx/wxdebug.xcconfig
@@ -1,3 +1,2 @@
 GCC_OPTIMIZATION_LEVEL = 0
 ONLY_ACTIVE_ARCH = YES
-WX_PREPROCESSOR_DEFINITIONS = __WXDEBUG__=1
\ No newline at end of file
diff --git a/build/osx/wxrelease.xcconfig b/build/osx/wxrelease.xcconfig
index 34ebec1adf..f89e8d74f4 100644
--- a/build/osx/wxrelease.xcconfig
+++ b/build/osx/wxrelease.xcconfig
@@ -1,2 +1 @@
 GCC_OPTIMIZATION_LEVEL = 2
-WX_PREPROCESSOR_DEFINITIONS = wxDEBUG_LEVEL=0
\ No newline at end of file